How Alkalinity test of boiler water is carried out?

1.     Take 200 ml water sample in the stoppered bottle.

2.     Add one P.Alkalinity tablet & shake or crush to disintegrate.

3.     If P.Alkalinity is present the sample will turn blue.

4.     Repeat the tablet addition, one at a time, until the blue colour turns to permanent yellow.

5.     Count the number of tablets used and carry out the calculation:

P.Alkalinity, ppm CaCO3 = (Number of tablet x 20) -10

f. Record the result obtainied on the log sheet provided, against the date on which result was obtained.