Measurement of Chlorine Residual

This video will cover taking a good chlorine sample and methods for analysis. Effective measurement of chlorine residual is essential for protection of public health. The presence of the residual not only provides disinfection, it also serves and an indicator of water quality. Loss of residual can be an indicator of a water quality problem.
Chlorine residual may be measured for compliance or non-compliance purposes. While the analysis will remain the same, how you collect the sample may differ. This video will discuss measurement of chlorine residual using a colorimetry and a handheld spectrophotometer. For more information about chlorine residual and other topics, visit our website at rcap.org.

[@derickphilibert1031]

Do the results of chlorine residue differ when using hach pocket Colorimeter and Hach DR 900??

[@abhineshkumarsharma6367]

What is mam total chlorine and why pink colur available. After 1 or2 or 3 hour and some times quickly see them and after 1hours lost the colour 🙏

[@xot6730]

Can you also take a sample at house bib ? Pls answer

[@pedritoruiz5032]

si me pueden mandar el video en español la calibracion y el procedimiento para medir los parametros

[@Roborosky15]

Ahora van

[@rasikathepul8093]

How to fine same test tiube

[@mesutysh7495]

This chlorine residual can only be tested for treated water for public consumption? Can we test for free chlorine for nature water like river, lake etc?

[@Ur2ez4me81]

Mesut YSH Yes you can test it in those waters. At our treatment facility when there is a leak in a customers basement coming in through a walk we will use this method to determine if it’s groundwater or water coming from a broken pipe...

[@aisyahalthafunnisabayuputr7091]

is this instrument able to sample the wound in humans in the wound swab and then identify chlorine levels?

[@BunnyOfElvnteenlives]

No..

[@jfresh2054]

How do you find the slope? Calibration curve?

[@rasikathepul8093]

How do you fine same slot

[@rasikathepul8093]

Im from sri lanka

[@rasikathepul8093]

Wich citi fine thas

[@yinmonmyint4132]

after 4 hours of adding the dpd powder in water, the water colour turn to foxglove colour. Not turn to colourless. So i want to know about the chlorine end point. Pls answer me

[@temicotek6043]

most probably your wait time was too long or the dpd isnt right

[@temicotek6043]

try running the test all over again

[@Ur2ez4me81]

Yin Mon Myint Why would you wait that long the chlorine will dissipate...