Boiler water analysis (hardness test)

 How to check hardness of boiler water sample.

Method.

° Firstly take 50ml of water sample

° Then add 2.5ml buffer solution

° Then add 1-2 drop of indicator Erichrom black tea

° Blue raddish colour show

° Then Triturate it against .01m EDTA solution 

° End point light blue colour attain

Formula 

Hardness ppm

                                Ml used*20