The amount of wetting agent often ranges from about 0.5 percent to about 2 percent, {HEAD ~ preferably about 0.8 to about 1 percent}, based on {TAIL ~ the total weight} of the formulation 
based on
The amount of wetting agent often ranges from about 0.5 percent to about 2 percent , { HEAD ~ preferably about 0.8 to about 1 percent } , based on { TAIL ~ the total weight } of the formulation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH