Production and Quality Assurance


CETCO Europe Ltd obtained BS EN ISO 9001:2000 registration (certificate no. 36855) in May 1997 (revised December 2008).  Full Quality Assurance certification is supplied with all of our liner systems and construction waterproofing products.


Our flexible approach to providing the best quality support means that we are able to test ASTM, DIN or BS standards.  CETCO Europe’s documented quality system ensures that full product traceability is possible from initial raw materials through to final composite liner.


During the process of manufacturing the rolls of Bentomat & Voltex, samples are taken at regular intervals.  In our laboratories products undergo comprehensive QA and R&D testing regimes including:

  • Permeability/index flux
  • Slope stability determination by direct shear box method
  • Montmorillonite content by x-ray diffraction
  • Cation exchange capacity by methylene blue or wet chemistry
  • Mass per unit area
  • Tensile strength
  • Peel strength
  • Elongation
  • CBR puncture resistance
  • Filtrate loss
  • Free swell
  • Plate water absorption
  • Chemical compatibility

Once all the required tests have been carried out and have met the appropriate criteria, then and only then will the rolls be approved for dispatch.

QA Certificates
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