Min. Order Reference FOB Price
1 Piece US$4,791.80 / Piece
Product Description
Product Description This automatic monitoring instrument is based on the nationalstandard GB7467-87"Water uality-Determination ofHexavalent Chromium Diphenylcarbohydrazide Spectropho-tometry." After the sample is oxidized, hexavalent chromiumreacts with diphenylcarbohydrazide in an acidic solution ...