UK testing facilities
Celtest Company Ltd - Trefelin laboratory
Celtest Company Ltd / Phenna Group
Trefelin, Llandygai, Bangor, Gwynedd, LL57 4LH, Wales, United Kingdom
Access: Yes
Testing capabilities
- Materials and structural testing
Services
Construction-materials laboratory testing for aggregates, asphalt and bituminous materials, concrete, soils, natural stone and related geotechnical work; current operator pages also name fresh-concrete sampling/testing, high-volume classification, triaxial-permeability testing and thermal-resistivity testing.
Equipment
35,000-square-foot facility; current soil-laboratory page names 50 triaxial permeability testing units and high-volume classification testing. No further limits retained.
Standards
UKAS ISO/IEC 17025 schedule 0494, issue 066 dated 19 August 2025; operator pages state UKAS-accredited construction-materials testing.
Contact
Operator-wide contact: Phone: +44 1248355269; Email: postmaster@celtest.com
Approximate location
LL57 4LH ยท Postcode area location