Pooltester vs Digital Photometer for Measuring Chlorine
A demonstration and comparison of two ways to measure Free Residual Chlorine (FRC) in drinking water, using a pooltester or a digital photometer.
This video was produced by the Oxfam Supply Centre. The products used in the video are available for all humanitarian agencies:
https://supplycentre.oxfam.org.uk
Find out more about chlorination from the Oxfam WASH team:
https://www.oxfamwash.org/chlorine