dipping fabric samples in {HEAD ~ the 10% acid solution} using {TAIL ~ a glass tray} to contain the acid, 
dipping fabric samples in { HEAD ~ the 10 % acid solution } using { TAIL ~ a glass tray } to contain the acid ,
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH