Disinfection of Pipelines - Disinfection of Pipelines and Storage Facilities Field Guide - page 35

Table 3-7b Handy field measures for calcium hypochlorite granules
(approximately 25 mg/L dosage for each 500-ft (152.4-m) interval)

Approximate Field Volume Measure

Pipe Diameter

Teaspoons *
(5 mL)

cup †
(60 mL)

cup ‡
(125 mL)

cups §
(250 mL)

¹₄ ¹₂

in . mm Grams

2 50 , 12 2

4 0 , 48 8 1

6 0 , 113 19 2 1

8 0 , 200 34 3 2 1

10 250 , 300 50 4 2 1

12 300 , 430 72 6 3 2

14 350 , 616 103 8 4 2

16 400 , 759 127 10 5 3

18 450 , 963 161 13 6 3

20 500 1,184 198 16 8 4

24 600 1,712 286 23 11 6

* A level teaspoon is about 6 g of calcium hypochlorite granules. One teaspoon is
about 5 mL.
† A ¹₄ -cup measure is about 75 g of calcium hypochlorite granules. A ¹₄ cup is about 60 mL.

‡ A ¹₂ -cup measure is about 150 g of calcium hypochlorite granules. A ¹₂ cup is about

125 mL.
§ A cup measure is about 300 g of calcium hypochlorite granules. A cup is about 250 mL.

Table
Tamer

The number of measures of each size. Example: For each
500-ft length of 8-in. pipe you need three -cup measures

of calcium hypochlorite granules. See shaded cell above.

¹₄

Glue tablets to top inside of pipe section

Figure 3-12 Placement of tablets inside pipe section