The reference method specified is based on igniting a test portion (of hard coal, brown coal, lignite, or coke) in intimate contact with Eschka mixture in an oxidizing atmosphere, removal of combustible matter and conversion of the sulfur to sulfate, extraction of sulfate with hydrochloric acid solution and gravimetric determination by precipitation with barium chloride.
Revises
ISO 334:1975
WITHDRAWN
ISO 334:1992
95.99
Withdrawal of Standard
10 tet 2013
WITHDRAWN
ISO 334:2013
Lëndët djegëse minerale të ngurta - Përcaktimi i squfurit të përgjithshëm - Metoda Eschka
95.99 Withdrawal of Standard
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