To test Libman Multi-Surface Disinfecting Cleaner for the removal of glass soil on glass, mirror and chrome.
Date Run:
10/21/2021
Experiment Procedure:
Three coupons of each substrate (glass, mirror and chrome) were collected and initial weights were taken. glass soil was applied to each coupon and allowed to air dry for 24 hours. After the 24 hour dry time, the weights of the newly contaminated coupons were measured. All coupons were placed into a Straight-Line Washability (SLW) machine. A KC Wypall cleaning cloth was attached to the cleaning block used for the test. The Wypall cloth and all coupons received 2 sprays of the Libman Cleaner and the SLW machine was run for 20 repetitions, simulating 20 manual wipes. Once cleaning concluded, the cleaned coupons were allowed to air dry for 24 hours. After 24 hours, the weights of the cleaned coupons were measured.
Trial Results:
Overall, visually the coupons were clean with minor residue left on the surface. Chrome had the highest percentage removal at 85% and glass and mirror were both about 72% effective.
Cleaner
Substrate
Initial wt. of cont
Final wt. of cont
% Removal
Average
Libman
Glass
0.0204
0.0051
75.00
72.35
0.0169
0.0057
66.27
0.0256
0.0062
75.78
Mirror
0.0232
0.0076
67.24
72.32
0.0207
0.0055
73.43
0.0253
0.0060
76.28
Chrome
0.0303
0.0041
86.47
85.12
0.0306
0.0044
85.62
0.0269
0.0045
83.27
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Visually the coupons were clean with minor residue left on the surface. Chrome had the highest removal effectiveness and glass and mirror were tied.
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