Animal feeding stuffs. Methods of sampling and analysis. Determination of benzoic and sorbic acid by High Performance Liquid Chromatography (HPLC)1 Scope This document specifies a method for the determination of benzoic acid and sorbic acid in animal feeding stuffs by high performance liquid chromatography method with ultraviolet detection (HPLC UV). The method is intended to be used for the determination of benzoic acid and sorbic acid as active substances in feed additives, premixtures, feed materials and compound feed and for benzoic acid in water. This method determines the total

with the prevailing time domain reflectometry method

BS EN ISO 22282-4:2012 applies to pumping tests performed on aquifers whose permeability is such that pumping from a well can create a lowering of the piezometric head within hours or days depending on the ground conditions and the purpose

polymer membrane filters

BS EN 1253-1 on gullies for buildings is useful for:

It is used with IEC 60950‑1

NOTE 1 For very small and medium enterprises (VSMEs)

Traffic and pedestrian routes do not cover stairs

safety and protection requirements

watertight construction and drained cavity construction

This channel provides increased margin compared to ISO/IEC 11801

those with lateral dimensions significantly less than 100 mm

master alloys