Water quality. Biochemical and physiological measurements on fish - Determination of vitellogenin1 Scope This part of ISO 23893 specifies a method for measuring vitellogenin (Vtg) concentrations in a fish plasma sample employing an enzyme linked immunosorbent assay (ELISA) method. It applies to fish that are sampled in the environment (fresh, estuarine or salt water) and to fish exposed to substances or effluents in a laboratory. The method is quantitative when using Vtg antibodies and a Vtg standard well characterized with the species of choice.

Communication

Uncertainty of particle size calibration

which transmit information in the form of light

NOTE Annex A summarizes data from a round robin test performed to verify the procedure specified in this International Standard

Optical fibre connectors are used to join optical fibres where a connect/disconnect capability is required

BS EN 82045-1 will benefit you:

This British Standard describes methods for determining

This involves a clear and unequivocal focus on RTS results and evidence-based actions

for the uniform assessment of those brake systems

BS EN 21089 lays down the taper dimensions and tolerances of electrode taper fits for spot welding electrode caps

if you are a manufacturer of induction units

BS EN 546-2  specifies the mechanical properties of wrought aluminium and aluminium alloy foil