CEN/TC 230
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 10974 | EN 26461-2:1993 | Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) - Part 2: Method by membrane filtration (ISO 6461-2:1986) | Izstrādē |
| 10959 | EN 26595:1992 | Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982) | Atcelts |
| 11123 | EN 26595:1992/AC:1992 | Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982) | Atcelts |
| 10953 | EN 26777:1993 | Water quality - Determination of nitrite - Molecular absorption spectrometric method (ISO 6777:1984) | Izstrādē |
| 10984 | EN 27027:1994 | Water quality - Determination of turbidity (ISO 7027:1990) | Atcelts |
| 10977 | EN 27828:1994 | Water quality - Methods of biological sampling - Guidance on handnet sampling of aquatic benthic macro-invertebrates (ISO 7828:1985) | Atcelts |
| 10983 | EN 27888:1993 | Water quality - Determination of electrical conductivity (ISO 7888:1985) | Izstrādē |
| 10978 | EN 28265:1994 | Water quality - Design and use of quantitative samplers for benthic macro-invertebrates on stony substrata in shallow freshwaters (ISO 8265:1988) | Atcelts |
| 10975 | EN 28692:1993 | Water quality - Fresh water algal growth inhibition test with Scenedesmus subspicatus and Selenastrum capricornutum (ISO 8692:1989) | Atcelts |
| 10970 | EN 29408:1993 | Water quality - Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds - Method of determining the oxygen demand in a closed respirometer (ISO 9408:1991) | Atcelts |
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