IS 3025 : Part 35 : 1988 Methods of Sampling and Test ( Physical and Chemical) for Water and Wastewater - Part 35 : Silica

1 Scope

Prescribes four methods for determination of silica as follows:

a) Gravimetric method,

b) Molybdosilicate method,

c) Heteropoly blue method, and

d) Automated method for molybdate-reactive silica.

1.1 Gravimetric method determines total silica. Other methodsdetermine molybdate reactive silica.