\u0413\u041e\u0421\u0422 21138.3-85
Chalk. Method for determination of chloride ions content in water extract
\u0413\u041e\u0421\u0422 \u0420 8.837-2013
Gas chromatographs for measurement of content of volatile halogenated organic compounds impurities in tap, drinking, natural and waste waters. Verification method