ریجنت جهت اندازه گیری کروم با دی فنیل کربوهیدرازید ChromaVer® 3 Chromium Reagent AccuVac® Ampules, pk/25 For determination of Hexavalant Chromium by the 1,5-Diphenylcarbohydrazide method, using ChromaVer® 3 Reagent AccuVac® Ampules. USEPA accepted for reporting for wastewater analysis using Hach Method 8023. Range: 0.010 - 0.700 mg/L Cr6+. Pack of 25 ampules