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| WLN-CA.W.52.1 | Determination of chlorophyll-A in water by means of spectrometer UV/VIS | in-house method |
| Principle: | The sample is filtered through a glass fibre filter. Next the filter is extracted with ethanol, thus freeing the present chlorophyll-A from the algae. The difference in the extinctions of the obtained solution, before and after acidification, measured at 665 and 750 nm, is a measure for the chlorophyll-A content. | |
| Determination: | Chlorophyll-a, photometer, water | |
| Performance characteristics: | ||
| Reporting limit: | 4 μg/l, matrix dependent | |
| Sustainability: | 30 days | |
| Sampling bottle: | Glass , green , 1000 ml (fill up to cap) | |
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