To reevaluate three products at higher temperatures.
Date Run:
10/16/2006
Experiment Procedure:
Three alternative products were selected from the previous trial based on effectiveness. Each product was diluted to 5% in 250 ml beakers using DI water and heated to 150 F on a hot plate.
Nine preweighed coupons were heavily coated with the Matchless Metal Polishing TSX Tripoli (1317-95-9) buffing compound u by heating the buffing compound and rubbing it onto the surface of the coupons. 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:
One product removed over 80% of the buffing compound from the brass coupons after five minutes of immersion cleaning. Two other products removed under 60%. 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
Polyspray Jet 790 XS
0.2563
0.1179
54.00
0.3234
0.0922
71.49
0.5825
0.3573
38.66
Detergent 8
0.3588
0.0740
79.38
0.1170
0.0098
91.62
0.2716
0.0530
80.49
Micro 90
0.3388
0.3178
6.20
0.2448
0.1932
21.08
0.3815
0.3023
20.76
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 effectiveness of the products was not improved through the increase in temperature. A follow test will be conducted using the products at a higher concentration.
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