[3-(2-Pyridyl)-5,6-bis(4-phenylsulfonic acid)-1,2,4-triazine, monosodium salt, monohydrate] CAS No. 69898-45-9. One of the most sensitive iron reagents known N4C20H13S2O6Na·...H2O, FW = 510.47. Assay:

For Iron determination by the 1,10 phenanthroline method, using FerroVer® Iron Reagent. Hach Method 8008. Sample size: 25 mL. USEPA approved for reporting wastewater analysis. Pack of 100 Powder Pi

For Iron determination by the 1,10 phenanthroline method, using FerroVer® Iron Reagent. Hach Method 8008. Sample size: 25 mL. USEPA approved for reporting wastewater analysis. Pack of 1000 Powder Pill

For determination of iron in cooling waters containing molybdate-based treatments. Hach Method 8365. Range: 0.01 - 1.80 mg/L Fe. Pack of 50 powder pillows

For determination of iron in cooling waters containing molybdate-based treatments. Hach Method 8365. Range: 0.01 - 1.80 mg/L Fe. Pack of 25 powder pillows