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    • Examination of biological properties of water
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    BS EN 26461-1 : 1993

    WATER QUALITY - DETECTION AND ENUMERATION OF THE SPORES OF SULFITE-REDUCING ANAEROBES (CLOSTRIDIA) - PART 1: METHOD BY ENRICHMENT IN A LIQUID MEDIUM

    British Standards Institution

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    BS EN 26461-2 : 1993

    WATER QUALITY - DETECTION AND ENUMERATION OF THE SPORES OF SULFITE-REDUCING ANAEROBES (CLOSTRIDIA) - PART 2: METHOD BY MEMBRANE FILTRATION

    British Standards Institution

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    BS EN ISO 9391 : 1995

    WATER QUALITY - SAMPLING IN DEEP WATER FOR MACRO-INVERTEBRATES - GUIDANCE ON THE USE OF COLONIZATION, QUALITATIVE AND QUANTITATIVE SAMPLERS

    British Standards Institution

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    BS EN ISO 9887 : 1995

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

    British Standards Institution

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    BS EN ISO 7346-3 : 1998

    WATER QUALITY - DETERMINATION OF THE ACUTE LETHAL TOXICITY OF SUBSTANCES TO A FRESH WATER FISH [BRACHYDANIO RERIO HAMILTON-BUCHANAN (TELEOSTEI, CYPRINIDAE)] - FLOW-THROUGH METHOD

    British Standards Institution

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    BS EN 1899-2 : 1998

    WATER QUALITY - DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND AFTER N DAYS (BODN) - PART 2: METHOD FOR UNDILUTED SAMPLES

    British Standards Institution

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    BS EN 1899-1 : 1998

    WATER QUALITY - DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND AFTER N DAYS (BODN) - PART 1: DILUTION AND SEEDING METHOD WITH ALLYLTHIOUREA ADDITION

    British Standards Institution

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    BS 6068-4.12(1998) : 1998

    WATER QUALITY - MICROBIOLOGICAL METHODS - DETECTION AND ENUMERATION OF LEGIONELLA

    British Standards Institution

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    BS EN ISO 7346-1 : 1998

    WATER QUALITY - DETERMINATION OF THE ACUTE LETHAL TOXICITY OF SUBSTANCES TO A FRESH WATER FISH [BRACHYDANIO RERIO HAMILTON-BUCHANAN (TELEOSTEI, CYPRINDAE)] - STATIC METHOD

    British Standards Institution

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    BS EN ISO 7346-2 : 1998

    WATER QUALITY - DETERMINATION OF THE ACUTE LETHAL TOXICITY OF SUBSTANCES TO A FRESH WATER FISH [BRACHYDANIO RERIO HAMILTON-BUCHANAN (TELEOSTEI, CYPRINDAE)] - SEMI-STATIC METHOD

    British Standards Institution

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