Two cleaners were chosen to be tested, Cleaner 1. Waterworks Heavy Duty Degreaser 1:7 dilution (the lowest vendor recommended dilution), and Cleaner 2. Surface Cleanse 930 2% (the lowest vendor recommended concentration). Three types of substrates were supplied by the company, being copper rings, steel discs (female) and steel discs (male). Two soils were tested with each cleaner, Soil A. Moly Dee (the most difficult soil for the company to remove), and Soil B. Tap Magic EP-extra (the most used soil). Three coupons of each substrate were used for each soil, meaning a total of 18 coupons were used for each cleaner. The coupons were soiled by dabbing the soils on using a swab. The coupons were then subjected to 15 minutes of unheated ultrasonics in their respective cleaner. Once the coupons were removed, their cleanliness was determined with a white glove test. Each coupon was wiped with a white cotton glove. If any soil came off onto the glove the coupons were declared to still be soiled. If no soil came off onto the glove the coupons were declared clean.
Waterworks Heavy Duty Degreaser 1:7 dilution was effective in removing the soil from the coupons using unheated ultrasonics. Surface Cleanse 930 2% was mostly successful in removing the soil from the coupons, however it did turn the copper gray in certain spots.