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Water quality - Guidance on validation of microbiological methods (ISO/TR 13843:2000)
99.60 Withdrawal effective
Water quality - Guidance standard for the identification, enumeration and interpretation of benthic diatom samples from running waters
99.60 Withdrawal effective
Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004)
99.60 Withdrawal effective
Water quality - Determination of free chlorine and total chlorine - Part 2: Colorimetric method using N, N-diethyl-1, 4-phenylenediamine, for routine control purposes (ISO 7393-2:1985)
99.60 Withdrawal effective
