SLUDGES: PHYSICAL-CHEMICAL /REF. 990013/
In the following tables you can see the dates on which the rounds take place:
| ROUND 1 | ROUND 2 |
|---|---|
| WEEK 13 23rd March 2026 |
WEEK 37 7th September 2026 |
| Arsenic | Aluminium |
| Cadmium | Cadmium |
| Copper | Copper |
| Chromium | Conductivity at 20ºC |
| Iron | Chromium |
| Kjeldahl nitrogen | Total phosphorus |
| Manganese | Total Organic Matter |
| Mercury | Mercury |
| Nickel | Nickel |
| pH | Lead |
| Lead | Zinc |
| Zinc |
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.
