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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.
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ISO 4496:1978
95.99
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12. 7. 2017.
Metalni prahovi - Određivanje sadržaja ostatka nerastvorljivog u kiselinama u prahovima gvožđa, bakra, kalaja i legura bakra
95.99 Повучен
Metalni prahovi - Određivanje sadržaja nerastvorljivog u kiselinama u prahovima gvožđa, bakra, kalaja i bronze (ISO 4496:1978)
95.99 Повучен