Water quality. Determination of the elimination and biodegradability of organic compounds in an aqueous medium. Activated sludge simulation test1 Scope This International Standard specifies a method for the determination of the elimination and the biodegradability of organic compounds by aerobic micro organisms. The conditions described simulate a waste water treatment plant. Two test systems can be used: activated sludge plants or porous pots. The tests can optionally be performed under conditions of nitrification and denitrification (Annex A) and coupling of the units (Annex B). The method

Network security management

Annex J provides details of significant technical changes between the 1997 edition and the 2011 edition

BS EN 50342-1 also includes batteries with a nominal voltage of 6 V

and also maintenance services

With obedience and compliance to BS 2011-2

Plan: establish the objectives and processes necessary to deliver results in accordance with the organization’s security policy

What is BS EN 1286 – Specification of low pressure mechanical mixing valves about

safety rules

Why should you use BS 202000

- Enclosure of common stairs

Water supply system designers

The requirements and definitions of BS EN 10028-1:2007+A1:2009 also apply