IS 11276 : 1985 Method of test for determination of openness or fiberization of chrysotile asbestos fibre by air permeability method using rapid surface area apparatus

1 Scope

1.1 This standard covers the procedure for measuring therelative degree of openness or fiberization of milled chrysotileasbestos fibre by air permeability using rapid surface areaapparatus.

1.2 This method is limited to fibres with an effective surfacearea in the range from 1 000 to 25 000 cm²/g.Samples containing excessive quantities of non-fibrous particles orcontaminants will not give reliable or meaningful results.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 4844 : 1968 Methodof sampling and preparation of asbestos fibre forlaboratory test purposes