Prep:
Coupons were created from aluminum foil and were then soiled with a pea sized amount of various soils by spreading the soil evenly across the surface using a cotton swab. Reflectance value data points were taken in five unique areas of the surface of each soiled coupon. The average of the five data points were recorded as the initial reflectance of each coupon.
Cleaning:
The benchtop vacuum vapor degreaser was utilized with the Dowclene 1601 Modified Alcohol to clean each coupon for 10 minutes within the cleaning chamber. Once each coupon was removed, they were allowed to air dry for about 1 minute before taking clean reflectance value measurements.
rotation= 60 rpm
T condenser= 0C
T vap= 20C