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Trial Number 2

Trial Purpose:

To evaluate the effectiveness of a solvent and aqueous based cleaners on the removal of silicone adhesives from stainless steel coupons using heated ultrasonics to replace NMP.

Date Run:


Experiment Procedure:

Twelve pre-weighed stainless steel coupons, three for each cleaner, were soiled for each contaminant tested. Approximately 0.5 g of the soil was applied using a hand held swab. Each set of coupons were placed into a beaker and immersed along with 40 kHz ultrasonics for 30 minutes. During this process, any noticeable soil removal was observed at ten minute intervals. Coupons were allowed to dry for 24 hours, and afterwards final weights were recorded as well as efficiency of removal was calculated for each coupon cleaned.

Trial Results:

Cleaner Conc. Initial wt. of cont. (g) Final wt. of cont. (g) % Cont. Removed % Average
Aquavantage 1400 GD 10% 0.4511 0.3727 17.38 19.67
0.557 0.4828 13.32
0.3842 0.2754 28.32
Surface Clean 930 2% 0.6263 0.6212 0.81 0.40
0.6134 0.6111 0.37
0.6439 0.6438 0.02
SC Aircraft and Metal Cleaner 1% 0.5851 0.5166 11.71 13.68
0.5326 0.4617 13.31
0.4559 0.3828 16.03
Sta-Sol® ESS 160 100% 0.3836 0.181 52.82 53.37
0.4321 0.1667 61.42
0.4309 0.2332 45.88

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.


All of the chemistries evaluated were not efficient in the removal of silicone adhesive in heated ultrasonics. Further testing with Sta-Sol® ESS 160 will be conducted with varying temperatures due to the promising visual and gravimetric results. The three aqueous cleaners have been deemed ineffective and will no longer be considered as an alternative.

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