(2) The following procedure is used in treating water in a canteen with
(a) Fill the canteen with the cleanest, clearest water available.
(b) Add one iodine tablet to a one-quart canteen of clear water; add
two tablets if the water is cloudy. Double these amounts for a two-quart canteen.
(c) Place the cap on the canteen loosely. Wait 5 minutes and then
shake the canteen well, allowing leakage to rinse the threads around the neck of the
(d) Tighten the cap and wait an additional 25 minutes before using the
water for any purpose.
c. Use of Calcium Hypochlorite to Purify Water in a Canteen. The following
procedure is used to purify water in a one-quart canteen with calcium hypochlorite
(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 cup half full of water and add the calcium hypochlorite
from one ampule, stirring with a clean stick until this powder is dissolved.
(3) Fill the cap of a plastic canteen half full of the solution in the cup and add
it to the water in the canteen. Then place the cap on the canteen and shake it
If an aluminum one-quart canteen is being used, add at least three capfuls of
the calcium hypochlorite solution to the canteen, as this cap is much smaller
than the one on the plastic canteen.
(4) Loosen the cap slightly and invert the canteen, letting the treated water
leak onto the threads around the neck of the canteen.
(5) Tighten the cap on the canteen and wait at least 30 minutes before
using the water for any purpose.
d. Boiling of Water. See paragraph 6-3e.