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    ISO 4067-6 : 1985

    TECHNICAL DRAWINGS - INSTALLATIONS - PART 6: GRAPHICAL SYMBOLS FOR SUPPLY WATER AND DRAINAGE SYSTEMS IN THE GROUND

    International Organization for Standardization

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    ISO 5667-10 : 1992(R2015)

    WATER QUALITY - SAMPLING - PART 10: GUIDANCE ON SAMPLING OF WASTE WATERS

    International Organization for Standardization

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    ISO 9887 : 1992(R2013)

    WATER QUALITY - EVALUATION OF THE AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM - SEMI-CONTINUOUS ACTIVATED SLUDGE METHOD (SCAS)

    International Organization for Standardization

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    ISO 10348 : 1993(R2018)

    PHOTOGRAPHY - PROCESSING WASTES - DETERMINATION OF SILVER CONTENT

    International Organization for Standardization

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    ISO 10707:1994(R2015)

    WATER QUALITY - EVALUATION IN AN AQUEOUS MEDIUM OF THE 'ULTIMATE' AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS - METHOD BY ANALYSIS OF BIOCHEMICAL OXYGEN DEMAND (CLOSED BOTTLE TEST)

    International Organization for Standardization

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    ISO 10304-2 : 1995

    WATER QUALITY - DETERMINATION OF DISSOLVED ANIONS BY LIQUID CHROMATOGRAPHY OF IONS - PART 2: DETERMINATION OF BROMIDE, CHLORIDE, NITRITE, ORTHOPHOSPHATE AND SULFATE IN WASTE WATER

    International Organization for Standardization

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    ISO 6849 : 1996(R2016)

    PHOTOGRAPHY - PROCESSING WASTES - DETERMINATION OF BORON

    International Organization for Standardization

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    ISO 11905-1 : 1997(R2013)

    WATER QUALITY - DETERMINATION OF NITROGEN - PART 1: METHOD USING OXIDATIVE DIGESTION WITH PEROXODISULFATE

    International Organization for Standardization

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    ISO 6222 : 1999(R2015)

    WATER QUALITY - ENUMERATION OF CULTURABLE MICRO-ORGANISMS - COLONY COUNT BY INOCULATION IN A NUTRIENT AGAR CULTURE MEDIUM

    International Organization for Standardization

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    ISO 11732 : 2005(R2019)

    WATER QUALITY - DETERMINATION OF AMMONIUM NITROGEN - METHOD BY FLOW ANALYSIS (CFA AND FIA) AND SPECTROMETRIC DETECTION

    International Organization for Standardization

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