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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If the arithmetic mean of the MDOD values from the three product samples is less than 2. Find Similar Items This product falls into the following categories.
The samples must also be no more than 12 months old at the date they are received at the test laboratory. The mean dissolved oxygen difference MDOD between water exposed to the product and control is determined based on measurements taken in weeks 5, 6 and 7.
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. Note that each of these tests is conducted on one material only, not on products consisting of multiple materials.
This is a study of gross acute toxicity. Please download Chrome or Firefox or view our browser tips. Ten samples of each material are required. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
WRAS approves these laboratories based on their participation in comparison tests conducted to ensure that approved laboratories achieve similar test results. Click to learn more. Take the smart route to manage medical device compliance.
WRAS approvals for fittings require both mechanical testing, as well as testing of non-metallic tests to BS The test is conducted with both chlorinated and non-chorinated water.
The faster, easier way to work with standards. Subscribe Subscribe Now Newsletter. 620-1 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. A taste test panel is employed for the evaluation. The MDOD must be less than 1. Customers who bought this product also bought BS 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.
British Standard BS 6920
When shipped to the laboratory, the samples are typically placed into labeled, polyethylene bags, because samples labeled directly with adhesive tape, ink, etc. Metallic materials are not evaluated under this test. The odor and flavor, color and turbidityextraction of substances of concern to public health bw extraction of metals tests are carried out at the specified high temperature.
Worldwide Standards We can source any standard from anywhere in the world. Growth of aquatic microorganisms Materials are placed into water that is saturated with dissolved oxygen and sealed into bottles.
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. You may find similar items within these categories by selecting from the choices below:. If the final MDOD value over weeks 5, 6, 7, 8 and 9 is less than 1.
The list of metals and maximum admissible concentration MAC of each is included in Figure 1.
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 69201 of dissolved oxygen in the water.
Suitability of non-metallic products for use in contact with water intended for human bz 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 PAG meets about 20 times each year to review the recently submitted WRAS approval applications and make a determination regarding acceptance. Standard Number BS Approvals are valid for five years. Your basket is empty.
British Standard BS – WCP Online
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.
Learn more about the cookies we use and how to change your settings. Extraction of substances of concern to public health This test is also known as the cytotoxicity test. A sample may consist of more than one piece. After exposure to the water and a 1: This directory can be found at https: