The insoluble matter is generally considered to be acid-insoluble silica and silicates, carbides, alumina, and clays. The methods are applicable to lubricant-free powders. ISO 4496 specifies apparatus and reagents, sampling, procedure, expression of results and test report.
Status : WithdrawnPublication date : 1978-08
Edition : 1Number of pages : 3
Technical Committee:Sampling and testing methods for powders (including powders for hardmetals)