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Trial Number 3

Trial Purpose:

Evaluation of Oakite Inproclean 3800

Date Run:

05/11/1995

Experiment Procedure:

Coupons were cleaned and dried with a heat gun to get the clean weight.  A total of nine coupons were contaminated with contaminants #1, #2 and #4.  #3 was ommitted because of lack of coupons and this appears to be the easiest contaminant to remove.  The coupons were then weighed after contamination.  Cleaning was done in an aggitated stirbar beaker at 140 degrees for 5 minutes.  The parts were then rinsed in tap water at 140 degrees for 5 minutes.  Drying was done under the air knives for 2 minutes and then placed in an oven  set at 216 degrees for 90 minutes.

Trial Results:

Lapping compound cleaned at 142 degrees, some removal by aggitation alone, very easy to remove contaminant by brushing for about 15 seconds. Vavoline grease cleaned at 146 degrees. Residual lapping compound in the cleaner seems to be clinging to the grease at first, but after a few minutes, you can see the grease being removed. Excellent removal of grease upon cleaning and rinsing. The Oakite cleaner is doing an excellent job of removing the Selmer oil. It appears one of the coupons was quite dirty after cleaning (the other two looked clean), this is probably due to the lack of aggitation it recieved.

TURI SURFACE CLEANING LAB EXPERIMENTAL DATA LOG
GRAVIMENTRIC ANALYSIS

 

sample # and contaminant

 

clean weight (g)

 

weight with contamination (g)

 

weight after cleaning (g)

 

weight change (g)

 

% removal

 

5881, cont. #1

 

34.5897

 

34.9895

 

34.5895

 

0.4

 

100

 

4080, cont. #1

 

34.4089

 

34.6598

 

34.4089

 

0.2509

 

100

 

4401, cont. #1

 

34.4408

 

34.7038

 

34.4408

 

0.263

 

100

 

4317, cont. #2

 

34.4315

 

34.5241

 

34.4324

 

0.0917

 

99

 

4470, cont. #2

 

34.4474

 

34.5255

 

34.448

 

0.0775

 

99.2

 

7399, cont. #2

 

34.7364

 

34.8441

 

34.7406

 

0.1035

 

96.1

 

5330, cont. #4

 

34.5332

 

34.6049

 

34.5352

 

0.0697

 

97.2

 

4801, cont. #4

 

34.4806

 

34.5507

 

34.5149

 

0.0358

 

51.1

 

1803, cont. #4

 

34.1814

 

34.2687

 

34.1827

 

0.086

 

98.5

Cont. #1- Clover Grease Mix Lapping Compound
Cont. #2- Valvoline Wheel Bearing Grease
Cont. #3- 90 Wt Gear Oil
Cont. #4- Selmer Tuning Slide and Cork Grease

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 Oakite 3800 was the best cleaner overall with a percentage removal of contaminants ranging from 100 to 51 percent. The 51 percent achieved on coupon 4801 was due to the lack of agitation this part received.
Due to the success of this trial, Oakite 3800 will be used on the next trial for Musical Instrument Re-finisher when the parts from Musical Instrument Re-finisher will be cleaned with beaker aggitation. This time contaminant #3 will be used and we are considering cleaning off the pieces with a cloth instead of a brush to protect the surface.

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