DRINKING WATER: PHYSICAL-CHEMICAL C /REF. 990003/
In the following tables you can see the dates on which the rounds take place:
| ROUND 1 | ROUND 2 |
|---|---|
| WEEK 12 16th March 2026 |
WEEK 38 14th September 2026 |
| Barium | Anionic surfactants |
| Beryllium | Cobalt |
| Bicarbonates | Kjeldahl Nitrogen |
| Calcium | Magnesium |
| Dry residue | Orthophosphates |
| Hardness | Total Cyanides |
| Vanadium | Total Phosphorus |
| Silica (Silicon dioxide) | |
| Silver |
You will find detailed information in our Proficiency Testing Scheme Catalogue.
You can find the guideline ranges of concentration here.
For any further information, please contact ielab at: comercial@ielab.es.
