The pot life of {HEAD ~ the formulation} after mixing is {TAIL ~ about three to about four hours} 
The pot life of { HEAD ~ the formulation } after mixing is { TAIL ~ about three to about four hours }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL