The sample liquid aspirating and dispensing probe includes {HEAD ~ a tubular plastic inner member} and {TAIL ~ a tubular metallic outer member} 
The sample liquid aspirating and dispensing probe includes { HEAD ~ a tubular plastic inner member } and { TAIL ~ a tubular metallic outer member }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL