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