{TAIL ~ The chlorine} or other soluble material within the bag or sachet is dissolved or subjected to {HEAD ~ a leaching action} in the liquid 
{ TAIL ~ The chlorine } or other soluble material within the bag or sachet is dissolved or subjected to { HEAD ~ a leaching action } in the liquid
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH