The assemblies may be held in {HEAD ~ that temperature range} from about 1 to about 5 hours or until they are sufficiently dense, e.g., having a specific gravity more than about 98% of {TAIL ~ the theoretical value} 
The assemblies may be held in { HEAD ~ that temperature range } from about 1 to about 5 hours or until they are sufficiently dense , e.g. , having a specific gravity more than about 98 % of { TAIL ~ the theoretical value }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL