IS 9690-1980
Test method for determination of openness or fibrillation of chrysotile asbestos fibers by the air permeability method using a Dyckhoff apparatus

Standard No.

IS 9690-1980

Release Date

1981

Published By

IN-BIS

Latest

IS 9690-1980

Scope

This standard covers the procedure for measuring the relative degree of openness or fiberization of milled chrysotile asbestos fibre by air permeability. Samples containing excessive quantities of non-fibrous particles or contaminants will not give reliable or meaningful results.

IS 9690-1980 history

• 1981 IS 9690-1980 Test method for determination of openness or fibrillation of chrysotile asbestos fibers by the air permeability method using a Dyckhoff apparatus