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To evaluate cleaners for replacing TCE in removing oil from metal.
Eight cleaners were selected from the lab's databases of testing and vendor information. Products were selected based on client supplied data. Each solution was diluted to 5% using DI water in a 600 ml beaker and heated to 130 F on a hot plate. Twenty-four preweighed coupons were contaminated with the New England Industrial Lubricants' NEILCUT 333 using a hand held swab. Coupons were weighed again to determine the amount of oil added. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. A 30 second rinse in tap water at 120 F followed cleaning. Coupons were dried using a Master Appliance heat gun at 500 F for 1 minute.
Once coupons cooled to room temperature, final weights were recorded. Product efficiencies were calculated and recorded.
Only two products, Warren Chemical Sea Wash 8 and International Products Surface Cleanse 930, removed over 80% of the oil from the stainless steel coupons. The following table lists the amount of contaminant added to each coupon as well as the effectiveness of each. (Three coupons per cleaner.)
|Cleaners||Coupon 1||Coupon 2||Coupon 3||Average|
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
The two effective products will be reevaluated in the next trial at higher concentrations. An additional five new products will evaluated at 5% concentrations as well.