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Trial Number 0

Trial Purpose:

To evaluate selected products for replacing TCE for removing buffing compound.

Date Run:

08/17/2006

Experiment Procedure:

Eight alternative products were selected from the lab's database of testing results based on supplied client information. Products were selected based on buffing compound and oil removal potential and compatibility with copper and brass metal substrates. Each product was diluted to 5% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Twenty-four preweighed coupons were coated with the red buffing compound using a hand held swab after heating to its melting point with a heat gun. Coupons were weighed a second time to determine the amount of buffing compound added. Three coupons were cleaned in each solution for five minutes using minimal stir bar agitation. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.

Trial Results:

Three products removed over 60% of the buffing compound from the copper coupons after five minutes of immersion cleaning. The following table lists the amount of buffing compound applied, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Daraclean 283 0.2223 0.0635 71.43
  0.5394 0.3643 32.46
  0.1759 0.0234 86.70
Inproclean 3800 1.1193 0.8928 20.24
  0.7376 0.5366 27.25
  0.9516 0.6233 34.50
Beyond 2001 0.9658 0.7572 21.60
  0.5583 0.3948 29.29
  0.8133 0.5594 31.22
Polyspray Jet 790 XS 0.6940 0.2108 69.63
  1.2507 0.0104 99.17
  0.8299 0.4237 48.95
Aquavantage 1400 0.5957 0.4241 28.81
  1.4571 1.2716 12.73
  0.9873 0.8591 12.98
Crystal Simple Green 0.9235 0.8357 9.51
  1.0745 0.8782 18.27
  0.5366 0.4141 22.83
Cleaner #10 1.0131 0.8020 20.84
  1.1350 0.8656 23.74
  0.8690 0.6697 22.93
XL 100 0.5371 0.0600 88.83
  0.3029 0.0120 96.04
  0.5201 0.2061 60.37

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 three effective products will be retested using ultrasonics and a higher temperature in an effort to increase the efficiencies of the products.