{HEAD ~ The overall weight} of {TAIL ~ the dispenser} is such that it is immersed when initially deposited into the liquid and is buoyant in the liquid when the reactive material has dissolved 
of
{ HEAD ~ The overall weight } of { TAIL ~ the dispenser } is such that it is immersed when initially deposited into the liquid and is buoyant in the liquid when the reactive material has dissolved
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH