for WRAS Approval
Over thirty years ago we developed methods in our laboratories to see how materials could
quality, and these methods now form the British Standard for testing
non-metallic materials in contact with drinking
water, BS 6920. Since then we have tested many thousands of materials against BS 6920,
and this standard now forms the basis for approval
given by The Water Regulations Advisory Scheme (WRAS).
BS 6920 was revised in June 2014 and testing to the
new standard is now accepted for all new
applications for approval by WRAS from 6th October
6920 Testing is made up of 5
1. Odour & Flavour
2. Appearance of Water
4. Growth of Aquatic Microorganisms
5. Leaching of Metals
|Unsuitable non-metallic materials can cause changes in the quality of the water that they are in contact with. These changes can affect the flavour and appearance of the water, as well as introducing toxic substances and promoting microbial growth.
[image - biofilm on rubber test sample]
Wqc can help
manufacturers who are developing new products and formulations
to meet WRAS/BS6920 test requirements. Our materials testing
experience is also invaluable in giving consultancy to manufacturers who
need to understand why their materials or products do not conform to WRAS/BS6920 requirements.
are fully equipped to deal with all aspects of
materials testing including automated analysis
of metals using plasma emission spectroscopy [ICP-OES & ICP-MS],
and preparation and curing of site-applied products.