Besides the formation of layers, {HEAD ~ the separation} of the sample can also be detected using the pH value and {TAIL ~ temperature} 
detected using
Besides the formation of layers , { HEAD ~ the separation } of the sample can also be detected using the pH value and { TAIL ~ temperature }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL