A single 10 gram tablet (effervescent chlorine release type ) is added and left for 2 hours after which potable water may be drawn through the tap.
(A single 10 gram tablet; is added; ) (A single 10 gram tablet; left; T:for 2 hours) (potable water; may be drawn; )
A single 10 gram tablet A single 10 gram tablet potable water
is added left may be drawn
T:for 2 hours