To test the effectiveness of Murphy Oil Soap in the removal of Hucker's Soil from various substrates.
Date Run:
07/21/2021
Experiment Procedure:
A Murphy Oil Soap solution was created by mixing 3mL of Murphy Oil Soap with 192 mL of water. Then, 3 coupons of each substrate (ceramic, plastic, painted metal) were collected and initial weights were taken. Hucker's Soil (Creamy Peanut Butter, Salted Butter, Wheat gluten, Egg Yolk, Evaporated milk, DI water, Printer's ink with boiled linseed oil, India Ink, Saline Solution) was applied to each coupon and allowed to air dry for 2 hours. After the 2 hour dry time, the weights of the newly contaminated coupons were measured. All coupons were placed into a Gardner-scrub Abrasion Tester machine. Wypall cleaning cloths were attached to each of the 3 cleaning blocks used for the test. Each Wypall cloth and all coupons received 2 sprays of the Murphy Oil Soap solution and the Gardner-scrub Abrasion Tester 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:
Cleaner
Substrate
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
% Overall
Murphy Oil Soap
Ceramic
0.1769
0.0134
92.43
89.37
79.00
0.1620
0.0125
92.28
0.2691
0.0682
74.66
Plastic
0.4885
0.0092
98.12
74.41
0.5012
0.0098
98.04
0.3852
0.2809
27.08
Painted Metal
0.2305
0.0103
95.53
73.22
0.2448
0.0121
95.06
0.1287
0.0913
29.06
Success Rating:
Test showed little or no promise.
Conclusion:
Murphy Oil Soap showed little success in the removal of Hucker's Soil from ceramic, plastic, and painted metal substrates.
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