Non-metallic materials in contact with drinking water in the UK must conform to British Standard (BS) to address regulations regarding. Find the most up-to-date version of BS at Engineering These Guidance Notes gives details of the BS tests and test sample The requirements for the suitability of non-metallic products are given in BS
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Standard Number BS Metallic materials are not evaluated under this test. WRAS approvals for fittings require both mechanical testing, as well bbs testing of non-metallic tests to BS Accept and continue Learn more about the cookies we use and how to change your settings. If the arithmetic mean of the MDOD values from the three product samples is less than 2.
The odor and flavor, color and turbidityextraction of substances of concern to public health and extraction of metals tests are carried out at the specified high temperature. If the application is determined to be acceptable, then the WRAS issues the approval. Note also that no formulation disclosure is required because the testing is applied in the same way 69201 each non-metallic material regardless of material type or formulation.
The MDOD must be less than 1.
Over a period of seven to nine weeks, the dissolved oxygen levels are ba to determine if any aerobic microorganism growth has resulted in a decrease in the level of dissolved oxygen in the water. The samples must also be no more than 12 months old at the date they are received at the test laboratory.
Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water the official title of BS may be long, but it does effectively describe the scope and purpose of the standard. Odor and flavor This test is performed on individual materials to determine if the materials impart a discernible odor or flavor to the water.
The faster, easier way to work with standards. If after seven weeks the MDOD value is between 1.
British Standard BS 6920
This directory can be found at https: A sample may consist of more than one piece. The mean dissolved oxygen difference MDOD between water exposed to the product and control is determined based on measurements taken in vs 5, 6 and 7. This is a study of gross acute toxicity.
A set list of metals is analyzed regardless of material type or formulation.
Materials are exposed to water and then the water is placed in contact with mammalian cells to observe any toxic effects on the cells, in order to assess potential human toxicity. Search all products by.
British Standard BS – WCP Online
The list of metals and maximum admissible concentration MAC of each is included in Figure 1. You may experience issues viewing this site in Internet Explorer 9, 10 or Interestingly, there is no safety standard or testing applicable to metallic materials in contact with drinking water in the UK. Customers who bought this product also bought BS There are no manufacturing-facility audits required for WRAS approvals.
BS includes five main test requirements, applied to all non-metallic materials in contact with drinking water:.
Note that each of these tests is conducted on one material only, not on products consisting of multiple materials. The PAG meets about 20 times each year to review the recently submitted WRAS approval applications and make a determination regarding acceptance. Extraction of metals A leaching test on all non-metallic materials is conducted.
Take the smart route to manage medical device compliance. The test is conducted with both chlorinated and non-chorinated water. So, there will be multiples of each of these tests for products that include multiple non-metallic materials in contact with the water supply, with each being a separate test on separate materials.
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