BS 6920-1 PDF

Vora Accept and continue Learn more about the cookies we use and how to change your settings. Customers who bought this product also bought BS This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. WRAS approvals for fittings require both mechanical testing, as well as testing of non-metallic tests to BS We use cookies to make our website easier to use and to better understand your needs. Growth of aquatic microorganisms Materials are placed into water that is saturated with dissolved oxygen and sealed into bottles.

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WRAS approves these laboratories based on their participation in comparison tests conducted to ensure that sb laboratories achieve similar test results. 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 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:.

Growth of aquatic microorganisms Materials are placed into water that is saturated with dissolved oxygen and 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 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 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. ASTM C PDF 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:. A taste test panel is employed for the evaluation.

We use cookies to make our website easier to use and to better understand your needs. The samples must also be no more than 12 months old at the date they are received at the test laboratory. Related Articles.

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BS 6920-1 PDF

WRAS approves these laboratories based on their participation in comparison tests conducted to ensure that sb laboratories achieve similar test results. 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.

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BS 6920-1 PDF

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