Shop › Hach Iron Standard Solution, 1 mg/L as Fe (NIST), 500 mL P/N: 13949 Image 1 of 1 Hach Iron Standard Solution, 1 mg/L as Fe (NIST), 500 mL P/N: 13949 $52.00 Add To Cart Added! Product Number: 13949For accuracy checks in iron determinations Product Number: 13949For accuracy checks in iron determinations You Might Also Like Hach Buffer Solution Kit, Color-coded, pH 4.01, pH 7.00 and pH 10.01, 500 mL P/N: 2947600 $51.00 Hach 5500sc Standard 1 Low Range Phosphate 2L P/N: 6776002 $183.00 Hach Molybdovanadate Reagent, 100 mL MDB P/N: 2076032 $36.00 Hach FerroZine Reagent Solution Iron Analysis .009-1.4 mg/L Fe P/N: 230149 $155.00 Hach 5500sc Standard 1 Silica, 2 L, for 5500sc Silica Analyzer P/N: 6775002 $109.00