| Parameter | Limit of detection | Precision± | Accuracy± | Reference method of measurement | Materials recommended for the container |
|---|
| |
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| (A) | (B) | (C) | (D) | (E) | (F) | (G) |
| 1 | pH | pH unit | — | 0·1 | 0·2 | —ElectrometryMeasured in situ at the time of sampling without prior treatment of the sample |
| 2 | Coloration (after simple filtration) | mg Pt/l | 5 | 10 % | 20 % | —Filtering through a glass fibre membranePhotometric method using the platinumcobalt scale |
| 3 | Total suspended solids | mg/l | — | 5 % | 10 % | —Filtering through a 0·45 μm filter membrane, drying at 105 °C and weighing |
| | | | | —Centrifuging (for at least 5 mins with mean acceleration of 2800 to 3200 g), drying at 105 °C and weighing |
| 4 | Temperature | °C | — | 0·5 | 1 | —ThermometryMeasured in situ at the time of sampling without prior treatment of the sample |
| 5 | Conductivity at 20 °C | μS/cm | — | 5 % | 10 % | —Electrometry |
| 6 | Odour | Dilution factor at 25 °C | — | — | — | —By successive dilutions | Glass |
| 7 | Nitrates | mg/l NO3 | 2 | 10 % | 20 % | —Molecular absorption spectrophotometry |
| 8 | Fluorides | mg/l F | 0·05 | 10 % | 20 % | —Molecular absorption spectrophotometry after distillation if necessary |
| | | | | —Ion selective electrodes |
| 9 | Total extractable organic chlorine | mg/l Cl | | | | |
| 10 | Dissolved iron | mg/l Fe | 0·02 | 10 % | 20 % | —Atomic absorption spectrophotometry after filtering through a filter membrane (0·45 μm) |
| | | | | —Molecular absorption spectrophotometry after filtering through a 0·45 μm filter membrane |
| 11 | Manganese | mg/l Mn | 0·01 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | 0·02 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | | | | —Molecular absorption spectrophotometry |
| 12 | Copper | mg/l Cu | 0·005 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | | | | —Polarography |
| | 0·02 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | | | | —Molecular absorption spectrophotometry |
| | | | | —Polarography |
| 13 | Zinc | mg/l Zn | 0·01 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | 0·02 | 10 % | 20 % | —Atomic absorption spectrophotometry |
| | | | | —Molecular absorption spectrophotometry |
| 14 | Boron | mg/l B | 0·1 | 10 % | 20 % | —Molecular absorption spectrophotometry | Materials not containing boron in any significant quantities |
| | | | | —Atomic absorption spectrophotometry |
| 15 | Beryllium | mg/l Be | | | | | |
| 16 | Cobalt | mg/l Co | | | | | |
| 17 | Nickel | mg/l Ni | | | | | |
| 18 | Vanadium | mg/l V | | | | | |
| 19 | Arsenic | mg/l As | 0·002 | 20 % | 20 % | —Atomic absorption spectrophotometry | |
| | 0·01 | | | —Atomic absorption spectrophotometry | |
| | | | | —Molecular absorption spectrophotometry | |
| 20 | Cadmium | mg/l Cd | 0·0002 | 30 % | 30 % | —Atomic absorption spectrophotometry | |
| | 0·001 | | | —Polarography | |
| 21 | Total chromium | mg/l Cr | 0·01 | 20 % | 30 % | —Atomic absorption spectrophotometry | |
| | | | | —Molecular absorption spectrophotometry | |
| 22 | Lead | mg/l Pb | 0·01 | 20 % | 30 % | —Atomic absorption spectrophotometry | |
| | | | | —Polarography | |
| 23 | Selenium | mg/l Se | 0·005 | | | —Atomic absorption spectrophotometry | |
| 24 | Mercury | mg/l Hg | 0·00010·0002 | 30 % | 30 % | —Flameless atomic absorption spectrophotometry (cold vaporization) | |
| 25 | Barium | mg/l Ba | 0·02 | 15 % | 30 % | —Atomic absorption spectrophotometry | |
| 26 | Cyanide | mg/l CN | 0·01 | 20 % | 30 % | —Molecular absorption spectrophotometry | |
| 27 | Sulphates | mg/l SO4 | 10 | 10 % | 10 % | —Gravimetric analysis | |
| | | | | —EDTA compleximetry | |
| | | | | —Molecular absorption spectrophotometry | |
| 28 | Chlorides | mg/l Cl | 10 | 10 % | 10 % | —Titration (Mohr's method) | |
| | | | | —Molecular absorption spectrophotometry | |
| 29 | Surfactants (reacting with methylene blue) | mg/l (Lauryl Sulphate) | 0·05 | 20 % | | —Molecular absorption spectrophotometry | |
| 30 | Phosphates | mg/l P2O5 | 0·02 | 10 % | 20 % | —Molecular absorption spectrophotometry | |
| 31 | Phenols (phenol index) | mg/l C6H5OH | 0·0005 | 0,0005 | 0,0005 | —Molecular absorption spectrophotometry 4 amionoantipyrine method | Glass |
| | 0·001 | 30 % | 50 % | —Paranitraniline method | |
| 32 | Dissolved or emulsified hydrocarbons | mg/l | 0·01 | 20 % | 30 % | —Infra-red spectrometry after extraction by carbon tetrachloride | Glass |
| | 0·04 | | | —Gravimetry after extraction by petroleum ether | |
| 33 | Polycyclic aromatic hydrocarbons | mg/l | 0·00004 | 50 % | 50 % | —Measurement of fluorescence in the UV after thin layer chromatographyComparative measurement in relation to a mixture of six control substances with the same concentration | Glass or aluminiumGlass or aluminium |
| 34 | Total pesticides (parathion, hexachlorocyclohexane, dieldrin) | mg/l | 0·0001 | 50 % | 50 % | —Gas or liquid chromatography after extraction by suitable solvents and purificationIdentification of the constituents of the mixtureQuantitative analysis | Glass |
| 35 | Chemical oxygen demand (COD) | mg/l O2 | 15 | 20 % | 20 % | —Potassium dichromate method | |
| 36 | Dissolved oxygen saturation rate | % | 5 | 10 % | 10 % | —Winkler's method | Glass |
| | | | | —Electrochemical method | |
| 37 | Biochemical oxygen demand (BOD5) at 20 °C without nitrification | mg/l O2 | 2 | 1,5 | 2 | —Determination of dissolved oxygen before and after five-day incubation at 20 °C ± 1 °C, in complete darkness Addition of a nitrification inhibitor | |
| 38 | Nitrogen by Kjeldahl method (except in NO2 and NO3) | mg/l N | 0·5 | 0,5 | 0,5 | —Mineralization, distillation by Kjeldahl method and ammonium determination by means of molecular absorption spectrophotometry or titration | |
| 39 | Ammonium | mg/l NH4 | 0·010·1 | 0,0310 % | 0,0320 % | —Molecular absorption spectrophotometry | |
| 40 | Substances extractable with chloroform | mg/l | | — | — | —Extraction at neutral pH value by purified chloroform, evaporation in vacuo at room temperature, weighing of residue | |
| 41 | Total organic carbon | mg/l C | | | | | |
| 42 | Residual organic carbon after flocculation and membrane filtration (5 μm) | mg/l C | | | | | |
| 43 | Total coliforms | /100 ml | 5500 | | | —Culture at 37 °C on an appropriate specific solid medium (such as Tergitol lactose agar, Endo agar, 0·4 % Teepol broth) with filtration or without filtration and colony count. Samples must be diluted or, where appropriate, concentrated in such a way as to contain between 20 and 100 colonies. If necessary, identification by gasification. | Sterilized glass |
| | | 5500 | | | —Method of dilution with fermentation liquid substrates in at least three tubes in three dilutions. Sub-culturing of the positive tubes on a confirmation medium. Count according to MPN (most probable number). Incubation temperature: 37 °C ± 1 °C. | |
| 44 | Faecal coliforms | /100 ml | 2200 | | | —Culture at 44 °C on an appropriate specific solid medium (such as Tergitol lactose agar, Endo agar, 0·4 % Teepol broth) with filtration or without filtration and colony count. Samples must be diluted or, where appropriate, concentrated in such a way as to contain between 10 and 100 colonies. If necessary, identification by gasification. | Sterilized glass |
| | | 2200 | | | —Method of dilution with fermentation in liquid substrates in at least three tubes in three dilutions. Sub-culturing of the positive tubes on a confirmation medium. Count according to MPN (most probable number). Incubation temperature 44 °C ± 0.5 °C. | |
| 45 | Faecal streptococci | /100 ml | 2200 | | | —Culture at 37 °C on an appropriate solid medium (such as sodium azide) with filtration or without filtration and colony count. Samples must be diluted or, where appropriate, concentrated in such a way as to contain between 10 and 100 colonies. | Sterilized glass |
| | | 2200 | | | —Method of dilution in sodium azide broth in at least three tubes with three dilutions. Count according to MPN (most probable number) | |
| 46 | Salmonella | | 1/5000 ml1/1000 ml | | | —Concentraion by filtration (on membrane or appropriate filter). | Sterilized glass |
| | | | | | —Innoculation into pre-enrichment medium. Enrichment and transfer into isolating gelese — Identification. | |