Water quality. Biochemical and physiological measurements on fish - Determination of ethoxyresorufin-O-deethylase (EROD)1 Scope This part of ISO 23893 specifies a method for measuring the ethoxyresorufin O deethylase (EROD) enzyme activity on a post mitochondrial fraction of fish liver homogenate (subcellular fraction in which the EROD activity is located) employing a cell or microplate fluorimetric method. It applies to fish that are sampled in their natural environment (fresh water or salt water) or exposed to substances or effluents in a laboratory. This method is

the methods described in this International Standard will determine only the percentage oversize

BS EN 60968 on safety requirements of self-ballasted fluorescent lamps is useful for:

Reservoirs made by assembled cuboid-shaped thermoplastic boxes

This part of ISO 5636 specifies the Sheffield method for determining the air permeance of paper and board using the Sheffield apparatus

Test methods and a recommended test schedule for type approval testing are also given

installation and maintenance of ducts in buildings for the accommodation of services

Installers of microduct

file etc) conforms to a declared value

control and monitoring system design and special design considerations for designing efficient electrical resistance trace heating systems

With compliance to the best-industry guidance specified in BS EN 4033 you can demonstrate the reliability of rigid single row ball bearings and build trust in their use throughout the aerospace supply chain

BS EN 15269-7 prescribes the methodology for extending the application of test results obtained from the test(s) conducted in accordance with EN 1634-1

PD CEN/TS 1459‑8 specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards