Breakpoint chlorination is the point at which the breakdown of choraminesis
completed and the addition of ______________________________________
What is the required chlorine residual in a fixed military installation water supply
a. 0.4 ppm FAC after a 10-minute contact period.
b. 1.0 ppm FAC after a 30-minute contact period
2.0 ppm FAC after a 60-minute contact period.
d. 5.0 ppm FAC after a 30-minute contact period.
e. 10.0 ppm FAC after a 60-minute contact period.
A measurable residual of FAC at all times in potable water.
If provisions for pH measurement are on hand, water treated in the field having a
pH of 6.0 should have a residual of _____ ppm FAC in the summer where the
presence of amoebic cysts is likely.
Water treated in the field, with an unknown pH, must have a residual of ____ ppm.
How many calcium hypochlorite ampules are used to initially disinfect a Lyster bag
of raw water? _________________.
When testing with the new chlorination kit, what must be observed?