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To evaluate successful cleaners on second supplied contaminant
Five cleaners were selected from previous trial. Four aqueous based cleaners were diluted to 10% using DI water in 600 ml beakers. One semi-aqueous product was used at 50% diluted with DI water. All of the products were heated to 120 F on a hot plate.
Fifteen preweighed aluminum coupons were coated with the second client supplied oil, Castrol Moly Dee Tapping Fluid. The oil was applied to coupons using a swab and then heated for 10 minutes using a Master Appliance heat gun. The coupons were allowed to cool to room temperature before weighing a second time.
Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Coupons were rinsed in tap water at 120 F for 15 seconds and then were dried using air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.
Three of the five products removed over 80% of the tapping fluid within five minutes. The Bio T 300 B removed nearly 100% of the soil. The current cleaner removed 76%. The table lists the amount of soil added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
|Cleaner||Initial wt||Final wt||% Removed|
|SC Aircraft & Metal Cleaner||0.4451||0.2141||51.90|
|Bio T 300 B||0.9124||0.0010||99.89|
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Increasing the cleaning time should improve the effectiveness of the products. A follow up trial will be conducted at a longer time but will not use a rinse.