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Amtax reagent kit, 2-120 mg/L. Includes one each of indicator solution （2825653） 1-L, standard solution （2825831） 273 mL, and expulsion solution （2825431） 273 mL. Solutions are supplied ready for immediate use. - See more at: http://www.hach.com/amtax-reagent-kit-2-120-mg-l/product?id=7640092904&callback=qs#sthash.hIdwmbUK.dpuf