- For determination of high range silica by the silicomolybdate method (Hach method 8185) Range:1 to 100 mg/L. Sample Size: 10 mL sample. Pack of 100 Powder Pillows. Method: 8185 Method Name: Silicomolybdate Number of tests: 100 Parameter: Silica Platform : Powder Pillows Quantity: 100 /pk Unit: 100 /pk