Laboratory · Gypsum and building lime
Gypsum and lime are air-setting binders used for plasters, plasterboard, restoration mortars and soil stabilisation. Their performance depends heavily on fineness and setting, which vary between producers and with storage.
These tests are carried out to BS EN 13279-2 and BS EN 459-2 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
- Checking plaster and lime deliveries against the declared type.
- Restoration of historic masonry, where lime mortars must be compatible.
- Soil stabilisation with lime.
Gypsum and lime (not accredited)
| Test | Standard / method |
|---|---|
| Fineness | BS EN 13279-2 / BS EN 459-2 |
| Setting time | BS EN 13279-2 / BS EN 459-2 |
| Consistence | BS EN 13279-2 / BS EN 459-2 |
| Compressive strength | BS EN 13279-2 / BS EN 459-2 |
| Soundness | BS EN 459-2 |
| Dry density | BS EN 459-2 |
| Free lime content | BS EN 459-2 |
Sampling and what to send us
- At least 5 kg in a sealed bag, with the product name and batch.
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.
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.