Water analysis — Coliform bacteria — Membrane filter method
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Water analysis — Sampling for bacteriological examination of water
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Corrigendum to NS 4789.1.edition 1990 - Water analysis - Sampling for bacteriological examination of water
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Amendment to NS 479, 1.edition 1986 - Rules for approval of welders - Fusion welding of non-ferrous metals
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Rules for approval of welders — Fusion welding of non-ferrous metals
Document status: Active
Rules for the approval of welders - Fusion welding of nonferrous metals
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Water analysis — Techniques for quantitative estimation of microorganisms from water, sediments and sewage sludge — Part 1: General equipment, choice of technique, storing of data
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Water analysis — Techniques for quantitative estimation of microorganisms from water, sediments and sewage sludge — General equipment, choice of technique, storing of data
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Water analysis — Techniques for quantitative estimation of microorganisms from water, sediments and sewage sludge — Preparation and storage of culture media, preparation of general solutions
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Water analysis — Techniques for quantitative estimation of microorganisms from water, sediments and sewage sludge — Dilution and special treatment of laboratory samples
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