- Latest available (Revised)
- Point in Time (12/12/2006)
- Original (As adopted by EU)
Directive 2006/113/EC of the European Parliament and of the Council of 12 December 2006 on the quality required of shellfish waters (codified version) (repealed)
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Abbreviations: G = guide I = mandatory | ||||||
Parameter | G | I | Reference methods of analysis | Minimum sampling and measuring frequency | ||
---|---|---|---|---|---|---|
1. | pH pH unit | 7 — 9 |
| Quarterly | ||
2. | Temperature °C | 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 |
| Quarterly | ||
3. | Coloration (after filtration) mg Pt/l | 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 |
| Quarterly | ||
4. | Suspended solids mg/l | 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 |
| Quarterly | ||
5. | Salinity ‰ | 12 to 38 ‰ | ≤ 40 ‰ Discharge affecting shellfish waters must not cause their salinity to exceed by more than 10 % the salinity of waters not so affected | Conductimetry | Monthly | |
6. | Dissolved oxygen (Saturation %) | ≥ 80 % | ≥ 70 % (average value) Should an individual measurement indicate a value lower than 70 %, measurements shall be repeated An individual measurement may not indicate a value of less than 60 % unless there are no harmful consequences for the development of shellfish colonies | Winkler's method Electrochemical method | 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 | |
7. | Petroleum hydrocarbons | Hydrocarbons must not be present in the shellfish water in such quantities as to:
| Visual examination | Quarterly | ||
8. | Organohalogenated substances | 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 the shellfish water or in shellfish flesh must not reach or exceed a level which has harmful effects on the shellfish and larvae | Gas chromatography after extraction with suitable solvents and purification | Half-yearly | |
9. | Metals | 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 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 | Spectrometry of atomic absorption preceded, where appropriate, by concentration and/or extraction | Half-yearly | |
Silver | Ag | |||||
Arsenic | As | |||||
Cadmium | Cd | |||||
Chromium | Cr | |||||
Copper | Cu | |||||
Mercury | Hg | |||||
Nickel | Ni | |||||
Lead | Pb | |||||
Zinc | Zn | |||||
mg/l | ||||||
10. | Faecal coliforms/100 ml | ≤ 300 in the shellfish flesh and intervalvular liquid | 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 ± 0,5 °C | Quarterly | ||
11. | Substances affecting the taste of the shellfish | Concentration lower than that liable to impair the taste of the shellfish | Examination of the shellfish by tasting where the presence of one of these substances is presumed | |||
12. | Saxitoxin (produced by dinoflagellates) |
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