Two contaminants, maintenance soil (10 g carbon black, 10 g iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil) and production soil (200 ml Quench oil, 200 ml cutting oil) were each prepared by mixing for 20 minutes at room temperature (68˚F) using a magnetic stirrer.
Approximately 100 mg of each soil was applied to a pre-weighed clean stainless-steel coupon on one side using a handheld swab. The maintenance soil contaminated coupons were baked in an oven for 30 minutes at a temperature of 40° C (105° F). Production soil contaminated coupons were baked in an oven for 30 minutes at 105° C (220 ° F). Coupons cooled at room temperature (68˚F) before taking dirty weights.
Three coupons with the same contaminant were immersed in the unheated, ready-to-use cleaner for 30 minutes. Coupons were rinsed in an unheated DI water bath for 20 minutes before drying in the oven at 105° C for 30 minutes. Coupons cooled to room temperature (68˚F) before final weights were recorded.