Silica Reagent Set, 0,010 - 1,600 mg/L SiO2

Description

Reagent Set Powder Pillows reagents (2459300) for the determination of Silica from Hach.

Аpplication: For boiler and ultrapure water.

The reagents are hermetically sealed in foil sachets, which provides them with a long shelf life. The reagent is simply poured into the measuring cuvette along with the sample. The analysis is carried out visually, for example using a color disc or with a HACH LANGE photometer.

Reagent Set includes: Amino Acid F Reagent Powder Pillows, Citric Acid Powder Pillows and Molybdate 3 Reagent Solution.

Summary of method: Silica and phosphate in the sample react with molybdate ion under acidic conditions to form yellow silicomolybdic acid complexes and phosphomolybdic acid complexes. Addition of citric acid destroys the phosphate complexes. An amino acid is then added to reduce the yellow silicomolybdic acid to an intense blue color, which is proportional to the silica concentration. The measurement wavelength is 815 nm for spectrophotometers (DR 1900: 800 nm) or 610 nm for colorimeters.