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Trial Number 8

Trial Purpose:

To evaluate the four cleaners on the remaining contaminant mix.

Date Run:

06/14/2001

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 a mix of the Spartan Chemicals and reweighed. 

94.72% MOAC 2945 (64742-52-5, 64742-53-5, 63449-39-8, 68608-26-4, 68918-91-2, 8002-26-4, 111-46-6, 07-41-5, 4719-04-4)
1.76% pH Boost (polysiloxane)
1.76% Anti Foam (2746.80-6, 124-68-5)
1.76% CA-12 (4719-04-4)

Three coupons were immersed into each solution and cleaned for two 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 effective in removing the mix of MOAC and additives from the steel coupons.  The table below lists the calculated efficiencies for each cleaner.

Cleaner Coupon 1 Coupon 2 Coupon 3 Average Std Dev
Inproclean 99.85 100.26 100.20 100.11 0.22
Daraclean 100.26 100.25 100.06 100.19 0.11
Green Stuff 99.99 100.10 100.04 100.04 0.06
Beyond 99.98 100.28 100.05 100.10 0.16

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 products were successful in cleaning the coupons.  The next test will be to clean the supplied parts in different products.  Clean parts will be sent back for client analysis.

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