Question

METHOD USED TO FIND RESIDUAL CHLORINE IN WATER IS ?
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Answer 1

Answer:

Testing for chlorine residual

The most common test is the dpd (diethyl paraphenylene diamine) indicator test, using a comparator. This test is the quickest and simplest method for testing chlorine residual. With this test, a tablet reagent is added to a sample of water, colouring it red.

Explanation:

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Answer 2

Answer:

: 1) Pool test kits;

2) Color-change test tubes;

3) Color-wheel test kits; and,

4) Digital colorimeters.