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.
WITHDRAWN
SSH ISO 334:2009
95.99
Withdrawal of Standard
Mar 30, 2014
WITHDRAWN
SSH ISO 334:2013
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