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Trial Number 5

Client Number 154

Project Number 1

Trial Purpose:

To evaluate successful cleaners on fifth contaminant.

Date Run:

06/12/2001

Experiment Procedure:

The four successful cleaners from the previous trial were again diluted to 5% using DI water in 600 ml beakers and placed in a Crest 40 kHz ultrasonic tank model 4Ht 1014-6. Solutions were heated to 130 F. Twelve preweighed coupons were coated with W.A. Wood #30 Lube Oil and reweighed. Three coupons were immersed into each solution and cleaned for five minutes. The coupons were rinsed in tap water at 120 F for 30 seconds and dried using a Master Appliance Corp, Hot-air gun model HG-301A at 500 F for 1 minute. Final "clean" weights were recorded and efficiencies were calculated.

Trial Results:

All four were successful in removing the #30 Lube Oil in under the 2 minutes of ultrasonic cleaning. Three of the four needed only 30 seconds to remove the oil from the coupons. Daraclean was the only one that took longer, require just over 1 minute. The lubricant floated to the top of each solution, making filtration or other forms of separation easy.
The following table lists the calculated efficiencies for coupon cleaned.

Cleaner Coupon 1 Coupon 2 Coupon 3 Average Std Dev
Inproclean 98.41 99.62 99.18 99.07 0.61
Daraclean 98.52 97.58 98.67 98.26 0.59
Green Stuff  100.02 99.52 99.83 99.79 0.25
Beyond 98.47 99.51 99.60 99.19 0.63

Success Rating:

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

Conclusion:

The four cleaners were all successful in removing over 98% of the lubricant in under one minute.

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