Laboratory · Mixing water for concrete
Mixing water is the most underestimated ingredient in concrete. Chlorides, sulfates, organic matter or oils dissolved in it affect setting and strength and, in the case of chlorides, drive corrosion of the reinforcement.
These tests are carried out to the methods referenced in BS EN 1008 but are not included in our ISO/IEC 17025 accredited scope (LT 069); reports are issued without the accreditation mark.
7tests on this page
Not accreditedoutside the LT 069 scope
EN · ISO · ASTMcurrent editions of the referenced standards
In our laboratoryVrrin, Durrës–Tirana motorway, km 29
When you need these tests
- Water from wells, streams or recycled batching-plant water.
- Coastal sites, where salt contamination is a real risk.
- Before bringing a new source into use, and periodically afterwards.
Mixing water (not accredited)
| Test | Standard / method |
|---|---|
| Chloride content | BS EN 1008 |
| Sulfate content | BS EN 1008 |
| pH | BS EN 1008 |
| Organic matter | BS EN 1008 |
| Silt and clay (suspended solids) | BS EN 1008 |
| Hardness | BS EN 1008 |
| Oil and grease | BS EN 1008 |
Sampling and what to send us
- At least 2 litres in a clean, sealed plastic bottle, filled to the top.
- Note the source and the sampling date.
What your test report contains
- A unique report number, the accredited laboratory’s details and the ISO/IEC 17025 accreditation mark for accredited tests.
- Sample identification, sampling details and the condition of the sample on receipt.
- The standard and method used for every test, with any deviation stated.
- Results with units, and comparison with the specified limits when you give them to us.
- Signature of the authorised laboratory staff.
Frequently asked questions
Is tap water acceptable without testing?
BS EN 1008 accepts drinking water from the public supply without testing. Other sources should be tested.
Related testing
Need these tests for your project?
Tell us the material, the quantity of samples and the specification you are working to. We’ll confirm the tests, the sampling and the price.