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Trial Number 4

Client Number 38

Project Number 2

Trial Purpose:

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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