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Trial Number 9

Trial Purpose:

To test Libman Multi-Surface Disinfecting Cleaner for the removal of bathroom soil on ceramic, chrome and plastic.

Date Run:


Experiment Procedure:

Three coupons of each substrate (ceramic, chrome, plastic) were collected and initial weights were taken. Bathroom soil (28.6% All-in-one shampoo and conditioner, 21.4% Dry skin lotion, 21.4% Liquid Hand Soap, 14.3% Liquid body wash, 7.2% Deodorant bar soap, 7.1% Water) 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 Libman Cleaner removed the soil from the substrate and was most effective on Plastic at 91% removal. Chrome and Ceramic were around 80% removal. visually the coupons looked clean with minor residue left over. 

Cleaner Substrate Initial wt. of cont Final wt. of cont % Removal Average
Libman Ceramic 0.0486 0.0088 81.89 78.05
0.0505 0.0092 81.78
0.0342 0.0101 70.47
Chrome 0.0582 0.0095 83.68 81.61
0.0445 0.0062 86.07
0.0313 0.0078 75.08
Plastic 0.065 0.0091 86.00 90.79
0.0727 0.0155 78.68
0.0442 -0.0034 107.69

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.


Libman Multi-Surface Disinfecting Cleaner performed the best on plastic and visually was still effective on chrome and ceramic which had minor filming left over on the surface. 

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