To evaluate past products using ultrasonic cleaning on first supplied rust preventative
Date Run:
08/05/2008
Experiment Procedure:
Nine products were selected for testing. Some of these products were chosen based on the previous trials and others based on vendor recommended information. Two products were diluted to 20% using DI water in 600 ml beakers. The other seven were used at full strength. Each product was immersed in a Branson 40 kHz ultrasonic tank and degassed for 5 minutes.
Twenty-seven preweighed steel coupons were coated with rust preventative VCI 325 using a hand held swab. Dirty weights were recorded. Three coupons were cleaned in each product for five minutes using ultrasonic agitation. No rinse was used and coupons were air dried at room temperature. Once dry, final weights were recorded and efficiencies calculated.
Trial Results:
One of the nine products removed 81% of the rust preventative. The coupons cleaned with Smart Solve 605 all gained weight during cleaning. A follow up will be performed to determine why this may have happened. The table lists the amount of soil added, the amount remaining and the efficiency of each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Smart Solve 605
0.0312
0.1069
-242.63
0.0497
0.0963
-93.76
0.0657
0.0990
-50.68
Ionox HC2
0.1658
0.0668
59.71
0.1080
0.0457
57.69
0.1426
0.0563
60.52
Shopmaster RC
0.0935
0.0762
18.5
0.2735
0.0796
70.9
0.2618
0.0633
75.82
Citrus Soy Solvent Cleaner & Degreaser
0.1673
0.1313
21.52
0.2071
0.0981
52.63
0.1304
0.1103
15.41
Bean-e-doo
0.1112
0.0526
52.70
0.1799
0.1190
33.85
0.1132
0.0606
46.47
Bio T 300 B
0.0992
0.0288
70.97
0.1093
0.0830
24.06
0.0868
0.0489
43.66
Maxi Solv
0.1044
0.0435
58.33
0.0917
0.0590
35.66
0.1363
0.0417
69.41
SC Aircraft & Metal Cleaner
0.0960
0.0623
35.10
0.0841
0.0468
44.35
0.1234
0.0294
76.18
Aquavantage 1400
0.1495
0.0394
73.65
0.1554
0.0218
85.97
0.1249
0.0189
84.87
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
So far none of the selected products have matched the performance of the current cleaning product using no rinsing and no drying. Additional testing will be conducted to identify other alternatives that will more closely match performance while improving the EHS.
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