How-to analyze free chlorine residual

[@annlisk5267]

Are you considering publishing these videos with a Spanish version? If so, our company would be most interested! Thank you.

[@digitalman269]

If you do, turn the music down!

[@arun4846]

Superb 👍

[@abhineshkumarsharma6367]

Mam how to determine chlorine demand for disinfection of water

[@cordaxg6261]

Quite informative although some words could have been explained a little more. Some things here that gets described seems to be on a higher level than beginner :) Otherwise great video

[@etherealaerials2381]

thanks