To evaluate successful alternatives at a higher temperature.
Date Run:
12/02/2004
Experiment Procedure:
Four products were selected based on test results from the previous trial. Each product was diluted with DI water to vendor suggested concentration. The products were then heated to 160 F on a hot plate.
Twelve of the pre-contaminated stainless steel coupons were cleaned, three coupons per product for 15 minutes using stir bar agitation. Cleaning was followed by a 15 second rinse in a tap water bath at 120 F and air blow off for 30 seconds at room temperature. Once dry, coupons were weighed a third time and efficiencies were calculated for each product tested.
Trial Results:
Three of the four products were all more effective at the higher temperature for the same cleaning time (15 minutes). Only the Ecco Commercial cleaner had a lower efficiency than cleaning at 130 F. (A difference of 7%). Two of the products removed over 75% of the oil/starch mix. The table below lists the amount of soil added, the amount remaining and the percent removed for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
VPW SC 1000
0.1596
0.0875
45.18
0.0611
0.0386
36.82
0.1829
0.0715
60.91
Ecco Commercial
0.0793
0.0567
28.50
0.0834
0.0134
83.93
0.0866
0.0334
61.43
Organic Cleaner/Degreaser
0.0945
0.0130
86.24
0.1665
0.0138
91.71
0.0547
0.0091
83.36
Super H2O2
0.0716
0.0226
68.44
0.1511
0.0257
82.99
0.0794
0.0191
75.94
Success Rating:
A follow up test, usually based on company input.
Conclusion:
All four products will be cleaned for an additional 15 minutes (30 minutes total). All other conditions will be kept the same.
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