A dispenser is disclosed which releases {HEAD ~ a substance} such as chlorine into {TAIL ~ an aqueous solution} such as the water of a swimming pool 
into
A dispenser is disclosed which releases { HEAD ~ a substance } such as chlorine into { TAIL ~ an aqueous solution } such as the water of a swimming pool
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH