STN EN 17899
| Name: | STN EN 17899 |
| Validity: | Valid |
| Number of pages: | 24 |
| Language: |
EN
|
| Paper: | 14,10€ |
| Electronic version |
a) Only read (without ability to print and copy)
12,69€ b) Without ability to print, with ability to copy (printscreen) 14,10€ c) With ability to print and copy (printscreen) 18,33€ |
| Slovak title | Kvalita vody. Spektrofotometrické stanovenie obsahu chlorofylu-a použitím extrakcie etanolom na rutinné monitorovanie kvality vody |
| English title | Water quality - Spectrophotometric determination of chlorophyll-a content by ethanol extraction for the routine monitoring of water quality |
| Release Date: | 01. 11. 2024 |
| Date of withdrawal: | |
| ICS: | 13.060.70, 71.040.50 |
| Sorting character/National clasification code | 75 7382 |
| Level of incorporation: | idt EN 17899:2024 |
| Official Journal | 10/24 |
| Amendments | |
| Replaced by: | |
| Repleces: | |
| Note in Official Journal: | |
| Subject of the standard: | This document describes a spectrophotometric method for determining the chlorophyll-a content corrected for phaeopigments as a measure of the amount of phytoplankton for all types of surface water including marine water. The determination limit is usually 2 µg/l to 5 µg/l and is calculated by each laboratory individually. It can be as low as 0,5 µg/l using 2 l of sample (or even more) and a 50 mm cuvette. NOTE In some measurement programs like marine studies on time series data and ecological status/classification no correction for phaeopigments is used and acidification is omitted, e.g. as recommended by OSPAR. |
| Preview: | Náhľad normy (PDF) |