1/4″ sheet of hdpe application us-HDPE sheets 4×8 1/4 brown pe300 sheet application-HDPE sheets 4×8 Desired application rate is 20 GPA of 28% Nitrogen. Determine the rrect nozzle size as follows: GPA (liquid other than water) x nversion Factor = GPA (from table in catalog) 20 GPA (28%) x 1.13 = 22.6 GPA (water) The applicator should choose a nozzle size that will supply 22.6 GPA of water at