CEN/TC 230
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 73269 | LVS EN 17899:2024 | Water quality - Spectrophotometric determination of chlorophyll-a content by ethanol extraction for the routine monitoring of water quality | Standarts spēkā |
| 78134 | LVS EN 18025:2025 | Water quality - Guidance standard on a strategic approach to river restoration | Standarts spēkā |
| 76122 | LVS EN 18110:2025 | Water quality – Assessment of damage to fish passing through pumping stations and hydropower plants – Methods based on live fish passage survival test and blade strike model | Standarts spēkā |
| 10995 | LVS EN 1899-1:1998 | Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815:1989, modified) | |
| 11051 | LVS EN 1899-2:1998 | Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 2: Method for undiluted samples (ISO 5815:1989, modified) | |
| 11007 | LVS EN 25663:2000 | Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium | Standarts spēkā |
| 10980 | LVS EN 25667-1:1993 | Water quality - Sampling - Part 1: Guidance on the design of sampling programmes | Atcelts |
| 10981 | LVS EN 25667-2:1993 | Water quality - Sampling - Part 2: Guidance on sampling techniques (ISO 5667-2:1991) | Atcelts |
| 10958 | LVS EN 25813:2000 | Water quality - Determination og dissolved oxygen - Iodometric method | Standarts spēkā |
| 10951 | LVS EN 25814:1992 | Water quality - Determination of dissolved oxygen - Electrotechnical probe method (ISO 5814:1990) | Atcelts |
Displaying 481-490 of 814 results.