(d) Since the CA(CIO)2 is only 70 percent chlorine, then
amount of CA(CIO)2 required = --------- = 4 oz
2-13. INDIVIDUAL WATER TREATMENT
When individuals and small detachments are operating away from their parent
units, it is frequently impossible or impracticable for them to obtain treated water. In this
case, it is necessary that they treat their own water. The unit may issue these
individuals calcium hypochlorite ampules from the chlorination kit, or they may issue
them the standard iodine water purification tablets packed in a small, airtight, wax-
sealed bottle. There are 100 tablets in each bottle.
a. Iodine Tablets. The following procedures are needed to be followed when
treating canteen water with iodine tablets:
(1) Check for physical change. The tablets may lose their disinfecting ability
in time. Tablets, which are not steel gray in color stick together, or are crumbled, should
not be used. If need be, obtain another bottle.
Fill the canteen with the cleanest, clearest water available.
(3) Add two iodine tablets to a one-quart canteen to this water (each iodine
tablet supplies a dosage of 8 ppm active iodine in one quart of water). The same two
tablets are needed for turbid (muddy or unclear) or cold (below 400F). For a two-quart
canteen, double the amounts.
NOTE: Using two iodine tablets instead of one is a change from the previous policy.
(4) Place the cap on the canteen and wait 5 minutes; then shake the
canteen well, loosen the cap, and allow the treated water to cleanse the threads around
the neck of the canteen to kill any microorganisms.
Tighten the cap and wait an additional 20 minutes before using the
b. Calcium Hypochicrite Ampules. The following procedure is used to purify
water in a one-quart canteen with calcium hypochlorite ampules:
(1) Fill the canteen with the cleanest, clearest water available leaving an air
space of an inch or more below the neck of the canteen.
(2) Fill a canteen cap half full of water and add the calcium hypochlorite
from one ampule. Stir with a clean stick until this powder is dissolved.