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QUALITY OF SHELLFISH WATERS // // // PARAMETER // G // I // REFERENCE METHODS OF ANALYSIS // MINIMUM SAMPLING AND MEASURING FREQUENCY // // // // // // // // // // // // // // // // // // // // // // // // // // // // // // // **** 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . PH PH UNIT TEMPERATURE * C COLORATION ( AFTER FILTRATION ) MG PT/L SUSPENDED SOLIDS MG/L SALINITY PRO MILLE DISSOLVED OXYGEN SATURATION % PETROLEUM HYDROCARBONS ORGANOHALOGENATED SUBSTANCES // METALS // SILVER // AG // ARSENIC // AS // CADMIUM // CD // CHROMIUM // CR // COPPER // CU // MERCURY // HG // NICKEL // NI // LEAD // PB // ZINC // ZN // MG/L // FAECAL COLIFORMS/100 ML SUBSTANCES AFFECTING THE TASTE OF THE SHELLFISH SAXITOXIN ( PRODUCED BY DINOFLAGELLATES ) A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE TEMPERATURE OF THE WATERS TO EXCEED BY MORE THAN 2 * C THE TEMPERATURE OF WATERS NOT SO AFFECTED 12 TO 38 PRO MILLE * 80 % THE CONCENTRATION OF EACH SUBSTANCE IN SHELLFISH FLESH MUST BE SO LIMITED THAT IT CONTRIBUTES , IN ACCORDANCE WITH ARTICLE 1 , TO THE HIGH QUALITY OF SHELLFISH PRODUCTS THE CONCENTRATION OF EACH SUBSTANCE IN SHELLFISH FLESH MUST BE SO LIMITED THAT IT CONTRIBUTES IN ACCORDANCE WITH ARTICLE 1 , TO THE HIGH QUALITY OF SHELLFISH PRODUCTS * 300 IN THE SHELLFISH FLESH AND INTERVALVULAR LIQUID ( 1 ) 7 - 9 A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE COLOUR OF THE WATERS AFTER FILTRATION TO DEVIATE BY MORE THAN 10 MG PT/L FROM THE COLOUR OF WATERS NOT SO AFFECTED A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE SUSPENDED SOLID CONTENT OF THE WATERS TO EXCEED BY MORE THAN 30 % THE CONTENT OF WATERS NOT SO AFFECTED THE CONCENTRATION OF EACH SUBSTANCE IN THE SHELLFISH WATER OR IN THE SHELLFISH FLESH MUST NOT EXCEED A LEVEL WHICH GIVES RISE TO HARMFUL EFFECTS ON THE SHELLFISH AND THEIR LARVAE THE SYNERGIC EFFECTS OF THESE METALS MUST BE TAKEN INTO CONSIDERATION CONCENTRATION LOWER THAN THAT LIABLE TO IMPAIR THE TASTE OF THE SHELLFISH GAS CHROMATOGRAPHY AFTER EXTRACTION WITH SUITABLE SOLVENTS AND PURIFICATION SPECTROMETRY OF ATOMIC ABSORPTION PRECEDED , WHERE APPROPRIATE , BY CONCENTRATION AND/OR EXTRACTION METHOD OF DILUTION WITH FERMENTATION IN LIQUID SUBSTRATES IN AT LEAST THREE TUBES IN THREE DILUTIONS . SUBCULTURING OF THE POSITIVE TUBES ON A CONFIRMATION MEDIUM . COUNT ACCORDING TO MPN ( MOST PROBABLE NUMBER ). INCUBATION TEMPERATURE 44 * C MORE OR LESS 0.5 * C EXAMINATION OF THE SHELLFISH BY TASTING WHERE THE PRESENCE OF ONE OF THESE SUBSTANCES IS PRESUMED QUARTERLY QUARTERLY QUARTERLY QUARTERLY MONTHLY MONTHLY , WITH A MINIMUM OF ONE SAMPLE REPRESENTATIVE OF LOW OXYGEN CONDITIONS ON THE DAY OF SAMPLING . HOWEVER , WHERE MAJOR DAILY VARIATIONS ARE SUSPECTED , A MINIMUM OF TWO SAMPLES IN ONE DAY SHALL BE TAKEN QUARTERLY HALF-YEARLY HALF-YEARLY QUARTERLY ABBREVIATIONS : G À GUIDE I À MANDATORY ( 1 ) HOWEVER , PENDING THE ADOPTION OF A DIRECTIVE ON THE PROTECTION OF CONSUMERS OF SHELLFISH PRODUCTS , IT IS ESSENTIAL THAT THIS VALUE BE OBSERVED IN WATERS IN WHICH LIVE SHELLFISH DIRECTLY EDIBLE BY MAN .

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Source: EUR-Lex (Cellar) · retrieved 2026-10-13 · Text as adopted (Official Journal); later amendments are not incorporated in this text.