CEN/TC 230
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 81888 | prEN ISO 23697-1 | Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23697-1:2023) | Aptauja |
| 81889 | prEN ISO 23697-2 | Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023) | Aptauja |
| 82508 | prEN ISO 25806 | Water quality - Guidance on field and laboratory procedures for aquatic macroinvertebrate sample preservation for DNA based analyses | Izstrādē |
| 82515 | prEN ISO 25807 | Water quality — Guidance on laboratory procedures mechanical homogenization and DNA extraction of aquatic macroinvertebrate samples | Izstrādē |
| 81572 | prEN ISO 5663 rev | Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium | Izstrādē |
| 81573 | prEN ISO 5667-1 rev | Water quality — Sampling — Part 1: Guidance on the design of sampling programmes and sampling techniques | Izstrādē |
| 81574 | prEN ISO 5667-3 rev | Water quality — Sampling — Part 3: Preservation and handling of water samples | Izstrādē |
| 11013 | prEN ISO 6340 | Water quality - Detection of Salmonella species (ISO 6340:1995) | Izstrādē |
| 82047 | prEN ISO 6461-2 rev | Water quality — Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) — Part 2: Method by membrane filtration | Izstrādē |
| 75403 | prEN ISO 7014 | Water analysis | Izstrādē |
Displaying 791-800 of 813 results.