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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British Standard BS 6920
Learn more about the cookies we use and how to change your settings. WRAS approves these laboratories based on their participation in comparison tests conducted to ensure that sb laboratories achieve similar test results. WRAS approvals for fittings require both mechanical testing, as well as testing of non-metallic tests to BS Standard Number BS A sample may consist of more than one piece.
Find Similar Items This product falls into the following categories. WRAS does not own or operate a testing laboratory. 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. Extraction of substances of concern to public health This test is also known as the cytotoxicity test. Search all products by.
Please download Chrome or Firefox or view our browser tips. Interestingly, there 69220-1 no safety standard or testing applicable to metallic materials in contact with drinking water in the UK.
This is a study of gross acute toxicity. Non-metallic materials in contact with drinking water in the UK must conform to British Standard BS to address regulations regarding prevention of contamination of the drinking water supply. Accept and continue Learn more about the cookies we use and how to change your settings. A set list of metals is analyzed regardless of material type or formulation. You may find similar items within these categories by selecting from the choices below:.
So non-metallic materials are evaluated for extraction of metals, along with the four other tests listed above, but metallic materials are not evaluated for extraction of metals in the UK. Growth of aquatic microorganisms Materials are placed into water that is saturated with dissolved oxygen and 69200-1 into bottles.
The test is conducted with both chlorinated and non-chorinated water. If the MDOD value is 1.
The mean dissolved oxygen difference MDOD between water exposed to the product and control is determined based on measurements taken in 692-1 5, 6 and 7. 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. 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.
The list of metals and maximum admissible concentration MAC of each is included in Figure 1. This 9620-1 is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
If the application is determined to be acceptable, then the WRAS issues the approval. Note that each of these tests is conducted on one material only, not on products consisting of multiple materials. Ten samples of each material are required.
Suitability of non-metallic materials and products for use in contact with water intended for human consumption with regard to their effect on the quality of the water. When shipped to the laboratory, the samples are typically placed into labeled, polyethylene bags, because samples labeled directly with adhesive tape, ink, etc. Approvals are valid for five years.
British Standard BS – WCP Online
Over a period of seven to nine weeks, the dissolved oxygen levels are measured to determine if any aerobic microorganism growth has resulted in a decrease in the level of dissolved oxygen in the water.
The MDOD must be less than 1. The faster, easier way to work with standards. BS includes five main test requirements, applied to all non-metallic materials in contact bx drinking water:. 620-1 and flavor This test is performed on 9620-1 materials to determine if the materials impart a discernible odor or flavor to the water. A taste test panel is employed for the evaluation.