UNTREATED CONTINENTAL WATER: PHYSICAL-CHEMICAL/REF. 993000/
In the following tables you can see the dates on which the rounds take place:
| ROUND 1* |
|---|
| WEEK 45 2nd November 2026 |
| Alkalinity |
| Ammonium |
| Arsenic |
| Cadmium |
| Carbonates |
| Conductivity at 20ºC |
| Magnesium |
| Mercury |
| Total Nitrogen |
| Orthophosphates |
| pH |
| Sodium |
| Sulfates |
*Round with an asterisk is not included in the scope of accreditation
You will find detailed information in our Proficiency Testing Scheme Catalogue. [Download Catalogue]
You can find the guideline ranges of concentration here.
For any further information, please contact ielab at: comercial@ielab.es.
