19.
b
(para 6-15a(2)).
20.
a (2) or (5)
b (5)
c(3)
d(1) or (3) (para 6-17).
21.
incidental result (para 6-19a).
22.
pH value (para 6-20a).
23.
increase in chlorine (para 6-20b).
24.
Quantities of contaminates suspended and dissolved in water (para 6-21c(2)).
25.
Reverse osmosis (para 6-21 NOTE).
26.
Dechlorination, 600 ppm carbon (para 6-21a(3)).
27.
minerals (para 6-19a).
28.
Superchlorination and dechlorination (paras 6-21a(3), b, Table 6-1).
29.
HD; Activated carbon, 600 ppm (Table 6-1).
30.
2.0 (Table 6-1).
End of Lesson 6
MD0160
6-40