{"product_id":"k-3902-deha","title":"CHEMetrics® CHEMets® Test Kit DEHA (0-400 \u0026 400-3000 ppb)","description":"\u003cdiv class=\"std secondary-desc\"\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e 0-400 \u0026amp; 400-3000 ppb\u003cbr\u003e\u003cstrong\u003eMDL:\u003c\/strong\u003e 15 ppb\u003cbr\u003e\u003cstrong\u003eMethod:\u003c\/strong\u003e PDTS\u003cp\u003eThe K-3902 DEHA CHEMets® test kit (0-400 \u0026amp; 400-3000 ppb) comes in a plastic case and contains everything needed to perform 30 tests: Refill (R-3902), Low and High Range Comparators (C-3901 \u0026amp; C-3902), Activator Solution (A-3900), 25 ml sample cup (A-0013), and instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTest Method:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe DEHA CHEMets® Test Kit (0-400 \u0026amp; 400-3000 ppb) employs the PDTS chemistry. The sample is treated with an excess of ferric iron. DEHA (N,N-Diethylhydroxylamine) reacts quantitatively with ferric iron by reducing it to the ferrous state. The resulting ferrous iron then reacts with PDTS (3-(2-pyridyl)-5,6-bis(4-phenylsulfonic acid)-1,2,4-triazine disodium salt) to form a pink-purple colored complex in direct proportion to the DEHA concentration.\u003c\/p\u003e \u003c\/div\u003e","brand":"CHEMetrics","offers":[{"title":"Default Title","offer_id":42261857501266,"sku":"K-3902","price":152.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/6099\/files\/big_K-3902.png?v=1768690568","url":"https:\/\/ramotrading.com\/products\/k-3902-deha","provider":"Ramo Trading ","version":"1.0","type":"link"}