{HEAD ~ an electrolyte solution} containing water, the electrolyte solution being added into {TAIL ~ said container} to be mixed with said electrolyte; and 
added into
{ HEAD ~ an electrolyte solution } containing water , the electrolyte solution being added into { TAIL ~ said container } to be mixed with said electrolyte ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH