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 5500sc Standard 1 Low Range Phosphate 2L P/N: 6776002 $183.00 Hach Silica Reagent Set P/N: 6783600 $860.00 Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine - LR P/N: 2635300 $364.00 Hach 5500sc Standard 2 Low Range Phosphate 2L P/N: 6775602 $183.00 Hach Silver Nitrate Standard Solution, 0.141 N, 500 mL P/N: 1255149 $94.00