Min. Order Reference FOB Price
1 Piece US$1,000.00-3,000.00 / Piece
Product Description
Product Description Implementation standard: According to the requirements of "HJ/T 399-2007 Determination of chemical oxygen demand in Water quality Rapid digestion spectrophotometry", "GB 11893-1989 determination of total phosphorus in water quality ammonium molybdate spectrophotometry", "HJ ...