Thermoplastics pipe and fitting systems for hot and cold water for domestic purposes and heating installations in buildings - General requirements1 Scope This part of BS 7291 specifies general requirements and methods of test for thermoplastics pipe and fitting systems intended for use within buildings for the conveyance of cold water, including drinking water, and heated water for use in domestic hot and cold water distribution and heating installations. These systems are also suitable for the conveyance of cold water for a period of 50 years at a temperature of 20 C and a design pressure of

Fibres for the C4 family specification are optimized for transporting optical amplifier pump light at 980 nm or higher

is generally used when the number sought is expected to be below 100 per millilitre or per gram of test sample

the design of drainage systems

5- Unsaponified saponifiable matter in commercial soaps about

sampling technique

b) Grade B2

The result of this measurement cannot be used directly for injection-moulding simulation

Standards’ evolution

— sewage water

IEC 60332‑3‑21 also covers the cable features as mentioned below:

compared to IEC 60917‑2

All technical aspects of BS 10008-1:2020 have been updated