Chemicals used for treatment of water intended for human consumption. Antiscalants for membranes. Phosphonic acids and salts1 Scope This European Standard is applicable to phosphonic acids and salts used as antiscalants for membranes in the treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for phosphonic acids and salts. It gives information on their use as antiscalants for membranes in water treatment. It also determines the rules relating to safe handling and use

Who is BS EN 14937-2 – Copper and copper alloys for

BS EN 13381-8 covers fire protection systems that involve only reactive materials and not passive fire protection materials as defined in this document

Note 1: ISO 277 is not intended to apply to tung oils that are wholly or partly solidified as a result of polymerization

sample preparation as well as a detailed test procedure to determine tear strength

Figure 1 shows the typical elements associated with optical fibre systems

b) The means of selecting the mode of procedures to be used by the transport entities

BS IEC 61892-3 applies to all installations

Populations characteristics and system design

Double hexagon headed bolts play a significant role in the operational and functional efficiency of aerospace applications

It is applicable to the specification of coatings

and which are used for sealing components against ingress or egress of fluids under dynamic and static conditions

This Part 2-2 is applicable to control transformers and power supplies incorporating control transformers without limitation of the rated output subject to an agreement between the purchaser and the manufacturer