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To evaluate successful products on second supplied contaminant.
Five products were selected from the previous trial. Each product was used at full strength and room temperature. In addition, the current cleaning solvent, IPA, was included for comparative purposes.
Eighteen preweighed glass coupons were contaminated with a strip of the supplied EVA material. Coupons were weighed again to determine the amount of contamination added. Three coupons were then cleaned with each solution.
Cleaning was performed by soaking a WypAll X60 reinforced paper towel with the cleaning solution. The coupons were then manually wiped for unto 1 minute followed by a 5 second wipe with a dry towel. Visual observations were made and recorded during cleaning. Once dry, the coupons were weighed a final time and removal efficiencies were calculated for each product.
Three of the alternatives and the IPA removed the EVA film in under a minute, with most requiring under 30 seconds. One product removed the film from 2 of the three coupons. The IPA caused the EVA film to ball up on itself, whereas the other effective products caused the EVA film to be removed in one piece, apparently breaking the bond between the glass and the film. The last product only removed the film from one coupon.
The table below lists the amount of EVA added, the amount remaining and the observations made for each coupon cleaned.
|Cleaner||Initial wt||Final wt||% Removed||Observations|
|Solsafe 245||0.9640||0.9343||3.08||little removal|
|0.7437||0.0012||99.84||removed in one long piece from one coupon|
|Shopmaster RC||0.9017||0.0007||99.92||peel off in 1 piece at 1 minute|
|1.0626||0.0005||99.95||off in 15 seconds|
|1.0177||0.0008||99.92||off in 11 seconds|
|SC Actisolv||0.8145||-0.0004||100.05||peel off in 1 piece at 9 seconds|
|0.9594||0.0004||99.96||peel off in 1 piece at 18 seconds|
|0.8028||-0.0001||100.01||peel off in 1 piece at 12 seconds|
|Ionox HC 2||0.8090||0.0000||100.00||peel off in 1 piece at 5 seconds|
|0.9910||0.0002||99.98||peel off in 1 piece at 5 seconds|
|0.8121||-0.0002||100.02||peel off in 1 piece at 2 seconds|
|DS 144||0.8931||0.0003||99.97||peel off in 1 piece at 36 seconds|
|0.7463||0.0009||99.88||peel off in 1 piece at 18 seconds|
|0.9123||0.9140||-0.19||only started to peel off at corners|
|IPA||0.9303||0.0005||99.95||rolled up into ball at 38 seconds|
|0.7740||0.0010||99.87||rolled up into ball at 36 seconds|
|0.8420||0.0001||99.99||rolled up into ball at 22 seconds|
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
The top three performing products (Shopmaster RC -28 seconds, SC Actisolv - 13 seconds and Ionox HC 2 - 4 seconds) removed the EVA film in less time than the IPA - 32 seconds.