CEN/TC 230
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 81888 | LVS EN ISO 23697-1:2025 | 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) | Standarts spēkā |
| 81887 | LVS EN ISO 23696-2:2025 | Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23696-2:2023) | Standarts spēkā |
| 81886 | LVS EN ISO 23696-1:2025 | Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023) | Standarts spēkā |
| 81885 | LVS EN ISO 23695:2025 | Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023) | Standarts spēkā |
| 28036 | LVS EN ISO 23631:2006 /AC:2007 | Water quality - Determination of dalapon, trichloroacetic acid and selected haloacetic acids - Method using gas chromatography (GC-ECD and/or GC-MS detection) after liquid-liquid extraction and derivatization | Standarts spēkā |
| 21712 | LVS EN ISO 23631:2006 | Water quality - Determination of dalapon, trichloroacetic acid and selected haloacetic acids - Method using gas chromatography (GC- ECD and/or GC-MS detection) after liquid- liquid extraction and derivatization | Standarts spēkā |
| 76867 | LVS EN ISO 23196:2023 | Water quality - Calculation of biological equivalence (BEQ) concentrations (ISO 23196:2022) | Standarts spēkā |
| 67612 | LVS EN ISO 22908:2020 | Water quality - Radium 226 and Radium 228 - Test method using liquid scintillation counting (ISO 22908:2020) | Standarts spēkā |
| 67529 | LVS EN ISO 22515:2021 | Water quality - Iron-55 - Test method using liquid scintillation counting (ISO 22515:2021) | Standarts spēkā |
| 21713 | LVS EN ISO 22478:2006 | Water quality - Determination of certain explosives and related compounds - Method using high-performance liquid chromatography (HPLC) with UV detection | Standarts spēkā |
Displaying 161-170 of 831 results.