To evaluate three supplied cleaning products for DCC-17 removal from plastic and painted steel surfaces.
Date Run:
10/17/2016
Experiment Procedure:
Three cleaners, Catholyte NaOH, Anolyte Hypochlorous, and 409 All Purpose Cleaner, were received “Ready to Use” (RTU). Pre-weighed coupons (three plastic, three painted steel) per cleaner were coated with one half gram of DCC-17, at room temperature, using a hand held swab. The contaminated coupons were air dried for 24 hours at room temperature and weighed again to determine the amount of soil added the following day. Three coupons of each substrate were placed in the SLW unit and a KC Wypal reinforced paper towel was attached to the cleaning sled and treated with two sprays of cleaning solution. Each coupon was sprayed twice with the same cleaning solution. The cleaning unit was run for 20 cycles (equivalent of 30 seconds of cleaning). Coupons were dried and final weights were recorded. Efficiencies were calculated and recorded.
Trial Results:
The three supplied products removed over 90% of the DCC-17 on each substrate using the manual wipe unit.
Substrate
Cleaner
Initial wt
Final wt
% Removed
% Average
Plastic
Catholyte
0.4956
0.0397
91.99
92.31
0.5056
0.0338
93.31
0.5052
0.0423
91.63
Anolyte
0.5109
0.0585
88.55
90.04
0.5058
0.0501
90.09
0.5114
0.0436
91.47
409 All Purpose Cleaner
0.4844
0.0317
93.46
93.81
0.5063
0.0327
93.54
0.5128
0.0285
94.44
Painted Steel
Catholyte
0.4900
0.0320
93.47
93.06
0.5190
0.0372
92.83
0.4812
0.0342
92.89
Anolyte
0.4997
0.0328
93.44
92.99
0.5107
0.0405
92.07
0.5070
0.0331
93.47
409 All Purpose Cleaner
0.5042
0.0283
94.39
94.44
0.5003
0.0368
92.64
0.5187
0.0193
96.28
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Free Catholyte NaOH, Anolyte Hypochlorous General Purpose, and 409 All Purpose Cleaner efficiently removed DCC-17 on ceramic and chrome using the Manual SLW Unit.
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