This standard applies to lignite and coal briquettes and establishes a method for determining their water absorption
GOST 21290-1975 Referenced Document
GOST 10742-1971 Brown coals, hard coals, anthracite, combustible shales and coal briquettes. Methods of sampling and preparation of samples for laboratory tests
GOST 21290-1975 history
2018GOST 21290-2018 Coal briquettes. Method for determination of water absorption
1975GOST 21290-1975 Coal briquettes. Method for the determination of water absorption