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To evaluate the efficiency one cleaner on GS 34 Soil-1 and GS 34 Soil- 2 from stainless steel and aluminum coupons using manual wipe technique.
Two sets of stainless-steel coupons were weighed. The first set was soiled with GS 34 Soil-1 and the other set was soiled with GS 34 Soil-2. Both soils were applied at the loading of ~100mg. The soiled coupons were oven dried for 30 minutes with 40 °C for GS 34 Soil-1 and 105 °C for GS 34 Soil-2. Dirty weights were recorded for all of the coupons.
The Eco Green Heavy-Duty Degreaser was supplied ready to use concentration. Three coupons were placed in a Gardner Straightline Washability unit and spray with a cleaning solution and allowed to soak for 1 minute. After soaking, the unit was run for 20 cycles (33 seconds) followed by a quick spray rinse using tap water at room temperature. Final weights were recorded the following day. Efficiencies were calculated and recorded.
Soil 1: Maintenance soil = 10 grams of carbon black, 10 grams iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil.
Soil 2: Production soil = 200 ml Quench Oil and 200 ml cutting oil
|Cleaner||Initial wt||Final wt||% Removed||Average|
Overall Eco Green Heavy-Duty Degreaser: 94.06
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
The Heavy-Duty Degreaser was very effective in the removal of GS-34 soils. The highest removal efficiency was approximately 97% on the stainless-steel coupons covered in production soil. The lowest removal efficiency was approximately 92% on the aluminum coupons covered in maintenance soil. There was a clear difference in efficiency based on which substrate was used. Stainless steel coupons showed a higher removal efficiency than aluminum coupons.