A solution of Mirachem 500 was prepared to a concentration of 25% and heated to 120°F. Three glass coupons were obtained, and an initial weight was recorded. Coupons were then soiled with Rosin #4 and a dirty weight was recorded. Once the cleaning solution reached the proper temperature, coupons were submerged into the beaker for 60 minutes with observations recorded at 5, 15, 30 and 60 minutes. Coupons air-dried for 24 hours, and a clean weight was recorded. The effectiveness of the cleaner was determined.