Citric Acid Reagent Powder Pillows for Silica, 10 mL, pk/1000 (10 x PK/100)

For determination of high range silica by the silicomolybdate method (Hach method 8185), and low range silica by the heteropoly blue method (Hach method 8186).
Pack of 1000 Powder Pillows (10 x pk/100).