Water quality. Determination of the acute toxicity to Thamnocephalus platyurus (Crustacea, Anostraca)1 Scope This International Standard specifies a method for the determination of the lethal effects of toxicants to Thamnocephalus platyurus test organisms after 24 h exposure. A second method (rapid test) is described in Annex A for the determination of sublethal effects after a very short exposure time (1 h). The methods are applicable to: a) chemical substances which are soluble or which can be maintained as stable suspensions or dispersions under

Why should you use BS EN 61291-6-1- Optical amplifiers interfaces

and decision makers (local authorities and regulators)

the definitions applied are tensile strength

Users of BS 5500

these have been included at the request of ISO/TC 172 and are published under the responsibility of the member bodies for Germany (DIN)

ISO 21809-11 helps you by providing guidance in material selection to prevent corrosion on steel pipes

Environmental protection

Key benefits associated with software identification tags include:

and courtesy

It also looks at the radiation measurements in the frequency range of 1 GHz to 18 GHz

c) units producing ventilation air mainly for a manufacturing process

making it an excellent choice for a wide range of industrial applications