RRA - Refrigerant Risk Assessment
Description
pulled from site's meta descriptionDetector Tubes make use of a chemical reaction between the target gas and a chemical, contained in a tube and dispersed over an inert adsorbent, e.g. silica gel. This reaction causes a characteristic colour change, which is a measure of the concentration of the target gas. A fixed volume of gas sample is aspired down the tube using a hand pump or sample pump and as it passes it reacts. Tubes may be used over a limited range of concentrations, by passing gas over them and using the supplied correction factor.
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