{"title":"Photometric Accuracy","description":"","products":[{"product_id":"666-f2-0-25-abs","title":"666-F2 (0.25 Abs)","description":"\u003cp\u003eAbsorption Value 0.25\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Product Specifications\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F2-39.pdf?v=1723171440\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45550381072637,"sku":"666F2-39","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F2.jpg?v=1752598538"},{"product_id":"666-f3-0-5-abs","title":"666-F3 (0.5 Abs)","description":"\u003cp\u003eAbsorption Value 0.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F3-38.pdf?v=1723171453\" target=\"_blank\" title=\"666F3-38\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45550420656381,"sku":"666F3-38","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F3.jpg?v=1752598537"},{"product_id":"666-f4-1-0-abs","title":"666-F4 (1.0 Abs)","description":"\u003cp\u003eAbsorption Value 1.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F4-37.pdf?v=1723171453\" title=\"Product Specifications\" rel=\"noopener\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45550428979453,"sku":"666F4-37","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F4.jpg?v=1752598537"},{"product_id":"667-uv40","title":"667-UV40","description":"\u003cp\u003e40mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.2 - 0.6\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667040\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667040.pdf?v=1723493930\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559597007101,"sku":"667040","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667040.jpg?v=1745519193"},{"product_id":"667-uv20","title":"667-UV20","description":"\u003cp\u003e20mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.1 - 0.3\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667020\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667020.pdf?v=1723493931\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559907746045,"sku":"667020","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667020.jpg?v=1752598529"},{"product_id":"667-uv60","title":"667-UV60","description":"\u003cp\u003e60mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.3 - 0.9\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667060\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667060.pdf?v=1723493931\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559909613821,"sku":"667060","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667060.jpg?v=1752598528"},{"product_id":"667-uv80-filter","title":"667-UV80","description":"\u003cp\u003e80mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.4 - 1.2\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667080.pdf?v=1723493931\" title=\"667080\" rel=\"noopener\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559921377533,"sku":"667080","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667080.jpg?v=1752598527"},{"product_id":"calibration-filter-667-uv0100","title":"667-UV0100","description":"\u003cp\u003e100mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.5 - 1.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"6670100\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670100.pdf?v=1723493932\" data-mce-href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670100.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559927111933,"sku":"6670100","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670100_a4f7a0e9-e550-430c-ac31-de1feedf3a1e.jpg?v=1752598526"},{"product_id":"667-uv0120-liquid-filter","title":"667-UV0120","description":"\u003cp\u003e120mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.6 - 1.8\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"6670120\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670120.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559931568381,"sku":"6670120","price":1096.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670120_c061d9a9-3ea7-4922-861b-058e5fafd9e1.jpg?v=1746586938"},{"product_id":"667-uv0140","title":"667-UV0140","description":"\u003cp\u003e140mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.7 -  2.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670120.pdf?v=1723493932\" title=\"6670120\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670140.pdf?v=1723493932\" title=\"6670140\" rel=\"noopener\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45559960633597,"sku":"6670140","price":1247.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670140_a90214ec-e1dd-4b1e-971f-f00819158825.jpg?v=1746586955"},{"product_id":"neutral-density-filter-666-f201-0-3-abs","title":"666-F201 (0.3 Abs)","description":"\u003cp\u003eAbsorption Value 0.3\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F201-39.pdf?v=1723171467\" target=\"_blank\" title=\"666F201-39\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45562152681725,"sku":"666F201-39","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F201.jpg?v=1752598519"},{"product_id":"666-f202-1-5-abs","title":"666-F202 (1.5 Abs)","description":"\u003cp\u003eAbsorption Value 1.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F202-36.pdf?v=1723171468\" title=\"666F202-36\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45562163626237,"sku":"666F202-36","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F202.jpg?v=1745519184"},{"product_id":"666-f203-2-0-abs","title":"666-F203 (2.0 Abs)","description":"\u003cp\u003eAbsorption Value 2.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F203-36.pdf?v=1723171468\" title=\"666F203-36\"\u003eProduct Specifications\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F202-36.pdf?v=1723171468\" title=\"666F202-36\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45562171621629,"sku":"666F203-36","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666-F203.jpg?v=1752598515"},{"product_id":"666-f204-0-7-abs","title":"666-F204 (0.7 Abs)","description":"\u003cp\u003eAbsorption Value 0.7\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F204-37.pdf?v=1723171468\" title=\"666F204-37\"\u003eProduct Specifications\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F202-36.pdf?v=1723171468\" title=\"666F202-36\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45562178339069,"sku":"666F204-37","price":842.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F204.jpg?v=1752598515"},{"product_id":"667-uv0120","title":"667-UV0160","description":"\u003cp\u003e160mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.8 - 2.3\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667020\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667020.pdf?v=1723493931\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45565261545725,"sku":"6670160","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670160.jpg?v=1752598507"},{"product_id":"667-uv0180","title":"667-UV0180","description":"\u003cp\u003e180mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.9 - 2.6\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670180_dd087aa0-0194-4080-8a8d-d76fe2d7601c.pdf?v=1760708347\" target=\"_blank\" title=\"6670180\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45565266460925,"sku":"6670180","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670180.jpg?v=1752598507"},{"product_id":"667-uv0200","title":"667-UV0200","description":"\u003cp\u003e200mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 1.0 - 3.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"6670120\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670120.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45565268820221,"sku":"6670200","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670200.jpg?v=1752598506"},{"product_id":"667-uv600","title":"667-UV600","description":"\u003cp\u003e600mg\/L Potassium Dichromate in Perchloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 1.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 430 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667060\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667060.pdf?v=1723493931\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45565271048445,"sku":"667600","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667-UV600.jpg?v=1745519170"},{"product_id":"667-uv014-perchloric-acid-reference-filter","title":"667-UV014","description":"\u003cp\u003ePerchloric Acid Reference Filter\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"6670120\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670120.pdf?v=1723493932\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"6670140\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/6670140.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45565286940925,"sku":"667014","price":1053.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667-UV14.jpg?v=1752598502"},{"product_id":"667-uv506","title":"667-UV506","description":"\u003cp\u003e6mg\/L Niacin in Hydrochloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.25\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667506.pdf?v=1723493931\" target=\"_blank\" title=\"667506\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566101815549,"sku":"667506","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667506.jpg?v=1752598497"},{"product_id":"667-uv512","title":"667-UV512","description":"\u003cp\u003e12mg\/L Niacin in Hydrochloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667512\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667512.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566113677565,"sku":"667512","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667512.jpg?v=1752598496"},{"product_id":"667-uv518","title":"667-UV518","description":"\u003cp\u003e18mg\/L Niacin in Hydrochloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.75\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667518.pdf?v=1723493932\" target=\"_blank\" title=\"667518\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566115217661,"sku":"667518","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667518.jpg?v=1752598496"},{"product_id":"667-uv524","title":"667-UV524","description":"\u003cp\u003e24mg\/L Niacin in Hydrochloric Acid\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 1.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"667512\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667512.pdf?v=1723493932\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566116299005,"sku":"667524","price":1206.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667524.jpg?v=1752598495"},{"product_id":"667-uv599","title":"667-UV599","description":"\u003cp\u003eHydrochloric Acid Reference Filter\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667599.pdf?v=1723493932\" target=\"_blank\" title=\"667599\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566123933949,"sku":"667599","price":1053.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667599.jpg?v=1752598494"},{"product_id":"667-uv350-niacin-liquid-filter","title":"667-UV350","description":"\u003cp\u003eNiacin Liquid Filter Set for Checking Photometric Accuracy and Linearity\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.25, 0.5, 0.75, 1.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 213, 261 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667350.pdf?v=1723493932\" target=\"_blank\" title=\"667350\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45566126326013,"sku":"667350","price":4355.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667350.jpg?v=1745519159"},{"product_id":"666s000","title":"666S000","description":"\u003cp\u003eNeutral Density Glass Filter Set\u003c\/p\u003e\n\u003cp\u003eF0, F1, F2, F3, F4\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.25, 0.5, 1.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 279, 361, 453, 536, 638 nm\u003c\/p\u003e\n\u003cp\u003eStandard Certification Absorption: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666S000.jpg?v=1733851234\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45585341087997,"sku":"666S000","price":2741.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666S000.jpg?v=1752598446"},{"product_id":"667-uv301","title":"667-UV301","description":"\u003cp\u003eSet of:\u003c\/p\u003e\n\u003cp\u003e60mg\/L Potassium Dichromate in Perchloric Acid \u0026amp; Perchloric Acid Reference Filter\u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.3 - 0.9\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667301_83d7de2e-ce36-40f8-a823-c26c91f96f59.pdf?v=1732222891\" target=\"_blank\" title=\"667301\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45824095125757,"sku":"667301","price":1995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667301_new.jpg?v=1757470681"},{"product_id":"667-uv100","title":"667-UV100","description":"\u003cp\u003eSet of:\u003c\/p\u003e\n\u003cp\u003ePotassium Chloride Liquid Filter for testing the Stray Light, Pure Water Reference Filter\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelength: Cut-Off approx. 198nm*, spectral range 190-205nm\u003c\/p\u003e\n\u003cp\u003ePure Water measured against air at: 198, 200, 300, 400nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667100_856e975b-2938-45c8-a4a1-a6bd2f416211.pdf?v=1732295050\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667301_83d7de2e-ce36-40f8-a823-c26c91f96f59.pdf?v=1732222891\" title=\"667301\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45825985347837,"sku":"667100","price":1884.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667100.jpg?v=1752598435"},{"product_id":"666r013","title":"666-R013","description":"\u003cp\u003eReference Plate for checking photometric accuracy\u003c\/p\u003e\n\u003cp\u003eColumn 1+2 empty – reference\u003cbr\u003eColumn 3+4 ND with 0.25 Abs\u003cbr\u003eColumn 5+6 ND with 0.5 Abs\u003cbr\u003eColumn 7+8 ND with 1.0 Abs\u003cbr\u003eColumn 9+10 ND with 1.5 Abs\u003cbr\u003eColumn 11+12 ND with 2.5 Abs\u003c\/p\u003e\n\u003cp\u003eStandard Certification Absorption at 8 points: 405, 450, 490, 650 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666R013.pdf?v=1733862274\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45869298417917,"sku":"666R013","price":4723.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666R013.jpg?v=1752598431"},{"product_id":"667ep10-ul-filter","title":"667EP10-UL","description":"\u003cp\u003eSpecific Content for Unchained Labs\u003c\/p\u003e\n\u003cp\u003eAcetone Liquid Filter for testing the Stray Light, (measured against air)\u003c\/p\u003e\n\u003cp\u003eCertification Wavelength: 260, 280, 300nm,  Cut Off 325nm Slit Width 2 nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePotassium Dichromate Liquid Filters, (measured against Perchloric Acid Reference Filter)\u003c\/p\u003e\n\u003cp\u003e20 mg\/L (0.1-0.3 Abs), 60 mg\/L (0.3-0.9 Abs), 120mg\/L (0.6-1.8 Abs), HClO4 Reference filter\u003c\/p\u003e\n\u003cp\u003e235, 257, 313, 350nm, Slit Width 2nm \u003c\/p\u003e\n\u003cp\u003eToluene in hexane Liquid Filter, (measured against hexane Reference Filter)\u003c\/p\u003e\n\u003cp\u003eScan from 265 to 270nm, Slit Width 1.0, 1.5, 2.0, 2.5, 3.0 nm\u003c\/p\u003e\n\u003cp\u003eHolmium Oxide Liquid Filter for testing the wavelength accuracy (measured against Perchloric Acid Reference Filter)\u003c\/p\u003e\n\u003cp\u003e241, 287, 361, 452, 485, 536, 640nm, Slit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 18 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/HA_Verification_Set_Flyer_EN.pdf?v=1737477466\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667301_83d7de2e-ce36-40f8-a823-c26c91f96f59.pdf?v=1732222891\" title=\"667301\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":45979247771901,"sku":"667EP10-UL","price":8732.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667EP10-UL.png?v=1745945191"},{"product_id":"667857v4","title":"667857V4","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ctable height=\"643\" style=\"border-collapse: collapse; width: 577px;\" width=\"386\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 576px;\" width=\"386\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"mso-height-source: userset; height: 109.25pt;\" height=\"145\"\u003e\n\u003ctd style=\"height: 109.25pt; width: 290pt;\" width=\"386\" class=\"xl66\" height=\"145\"\u003e\n\u003cp\u003eHellma calibration standard set UV857V4 for checking the photometer according to USP 857\u003c\/p\u003e\n\u003cp\u003eVerification of the wavelength accuracy with UV5 holmium oxide liquid filter, calibrated at wavelengths 241, 250, 278, 287, 333, 345, 361, 385, 416, 452, 468, 485, 536, 640 nm, slit width 1 nm, measured against air.\u003cbr\u003e\u003cbr\u003eChecking the photometric accuracy in the Vis range with the neutral density glass filters F2 (0.25 Abs), F203 (2.0 Abs), calibrated at wavelengths 440, 465, 546.1, 590, 635 nm, slit width 1 nm, measured against air. \u003cbr\u003e\u003cbr\u003eChecking the photometric accuracy and linearity in the UV range with UV20 potassium dichromate 20 mg\/l, UV0140 potassium dichromate 140 mg\/l, calibrated at wavelengths 235, 257, 313, 350 nm, slit width 2 nm, measured against UV14 perchloric acid (blank). \u003cbr\u003e\u003cbr\u003eChecking stray light with UV19 acetone, calibrated at 300 nm with slit width 1 nm, cut-off approx. at 385 nm, measured against air.\u003cbr\u003e\u003cbr\u003eChecking the spectral resolution with UV6 toluene in hexane and UV9 hexane reference filter (blank), calibrated at wavelengths 265 - 270 nm, slit widths 0.5, 1.0, 1.5, 2.0, 3.0 nm.\u003cbr\u003e\u003cbr\u003eAll filters with serial number, packed in high-quality storage box with DAkkS calibration certificates, for UV6\/UV9 Hellma Analytics calibration certificate. Note: Hellma Analytics calibration certificate (factory calibration, not covered by accreditation!)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46175745671421,"sku":"667857V4","price":8071.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667857V4.jpg?v=1755201857"},{"product_id":"666-s004-neutral-density-glass-filter-set","title":"666-S004","description":"\u003cp\u003eNeutral Density Glass Filter Set\u003c\/p\u003e\n\u003cp\u003eF0, F201, F202, F203, \u003c\/p\u003e\n\u003cp\u003eAbsorption Value 0.3, 1.5, 2.0\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Absorption: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Product Specifications\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666S004_274ab739-5feb-4ded-90af-b4fd2ddc7803.pdf?v=1745594847\" target=\"_blank\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46234380534013,"sku":"666S004","price":23944.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666S000.jpg?v=1752598446"},{"product_id":"666-r113","title":"666-R113","description":"\u003cp\u003eReference Plate for checking photometric and wavelength accuracy\u003c\/p\u003e\n\u003cp\u003eColumn 1+2 empty – reference\u003cbr\u003eColumn 3+4 ND with 0.5 Abs\u003cbr\u003eColumn 5+6 ND with 1.0 Abs\u003cbr\u003eColumn 7+8 ND with 1.5 Abs\u003cbr\u003eColumn 9+10 ND with 2.0 Abs\u003cbr\u003eColumn 11+12 ND Holmium glass\u003c\/p\u003e\n\u003cp\u003eStandard Certification Absorption at 8 points in a row: 405, 450, 490, 650 nm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12.0pt; line-height: 106%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-font-kerning: 0pt;\"\u003eWavelength accuracy certified with DAkkS calibration certificate at \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12.0pt; line-height: 106%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin; mso-font-kerning: 0pt;\"\u003eWavelengths: 279, 287, 361, 418, 445, 453, 536, 638 nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in;\"\u003e \u003c\/p\u003e\n\u003cp\u003eSlit Width 1 nm up to 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666R113.pdf?v=1750951204\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46390730850557,"sku":"666R113","price":5335.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666R113_0f3e67f1-f3fe-44f2-aab6-c587a4aef1d3.jpg?v=1750960316"},{"product_id":"666-f301-2-5-abs","title":"666-F301 (2.5 Abs)","description":"\u003cp\u003eAbsorption Value 2.5\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F301-261_373a5eff-54d7-4cf3-b18a-f4018df79b68.pdf?v=1751472110\" target=\"_blank\" title=\"Product Specifications\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46406031933693,"sku":"666f301-361","price":842.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/CRMglassfilter666F301-361.jpg?v=1752598414"},{"product_id":"667-uv307","title":"667-UV307","description":"\u003cp\u003eSet for checking Linearity:\u003c\/p\u003e\n\u003cp\u003eUV20: 20 mg\/l Potassium dichromate in HCIO6 (0.1-0.3Abs)\u003cbr\u003eUV40: 40 mg\/l Potassium dichromate in HCIO6 (0.2-0.6Abs)\u003cbr\u003eUV60: 60 mg\/l Potassium dichromate in HCIO6 (0.3-0.9Abs)\u003cbr\u003eUV80: 80 mg\/l Potassium dichromate in HCIO6 (0.4-1.2Abs)\u003cbr\u003eUV0100: 100 mg\/l Potassium dichromate in HCIO6 (0.5-1.5Abs)\u003cbr\u003eUV14: Perchloric acid (HCIO 4), (reference filter)\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667307_8755f0f9-ebbb-4b4e-ba60-cbebd262226d.pdf?v=1756152089\" target=\"_blank\" title=\"667307\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46576043032829,"sku":"667307","price":5373.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667307_7e776618-8e74-4f6d-8a79-bb930db05ed0.jpg?v=1756151707"},{"product_id":"667-uv305","title":"667-UV305","description":"\u003cp\u003eSet of:\u003c\/p\u003e\n\u003cp\u003e60mg\/L Potassium Dichromate in Perchloric Acid, Absorption Value 0.3 - 0.9\u003c\/p\u003e\n\u003cp\u003e600mg\/L Potassium Dichromate in Perchloric Acid, Absorption Value 1.0\u003c\/p\u003e\n\u003cp\u003ePerchloric Acid Reference Filter\u003c\/p\u003e\n\u003cp\u003eUV60 Standard Certification Wavelengths: 235, 257, 313, 350 nm\u003c\/p\u003e\n\u003cp\u003eUV600 Standard Certification Wavelengths: 430 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 2 nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 12 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667305_7476d19d-065c-4e24-af15-d19eb0b8ee9a.pdf?v=1759500393\" target=\"_blank\" title=\"667305\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":46688967196925,"sku":"667305","price":3146.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/667305.jpg?v=1759500436"},{"product_id":"666-f390-0-04-abs","title":"666-F390 (0.04 Abs)","description":"\u003cp\u003eAbsorption Value 0.04\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStandard Certification Wavelengths: 440, 465, 546.1, 590, 635 nm\u003c\/p\u003e\n\u003cp\u003eSlit Width 1nm\u003c\/p\u003e\n\u003cp\u003eWith DAkkS Certificate\u003c\/p\u003e\n\u003cp\u003eRecertification Interval Recommended every 24 months\u003c\/p\u003e\n\u003cp\u003eMade to order, available in 3-6 weeks\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666F390-25_2.pdf?v=1769714073\" target=\"_blank\" title=\"666F390-25\" rel=\"noopener\"\u003eProduct Specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Hellma USA. Inc.","offers":[{"title":"Default Title","offer_id":47169879736573,"sku":"666F390-25","price":842.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/7185\/9197\/files\/666f390.jpg?v=1769713744"}],"url":"https:\/\/hellma.mx\/en\/collections\/photometric-accuracy.oembed","provider":"Hellma USA. Inc.","version":"1.0","type":"link"}