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Trial Number 7

Trial Purpose:

To evaluate the effectiveness of the Mrs. Meyers Clean Day Lavender Tub & Tile Cleaner and Cleanyst Free & Clear Tub & Tiles Cleaner on the removal of bathroom soil on various surfaces.

Date Run:

01/24/2020

Experiment Procedure:

Eighteen pre-weighed coupons, three of each substrate per cleaner, were each contaminated with one gram of 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). The dirty weights were recorded after the coupons had dried for 24 hours at room temperature (68 F). Three coupons of the same substrate were aligned into a Single Line Washing Unit (SLW) with The Wypall X60 attached to the cleaning sled. The Wypall X60 reinforced wipe along with the coupons were all sprayed three times with the cleaner and then allowed to soak for 30 seconds. Afterwards the Single Line Washing Unit (SLW) was activated and cleaned for 20 cycles. The clean coupons were all then allowed to dry overnight at room temperature before the final weights were recorded.

Trial Results:

Cleaner Coupon Type Initial wt. of cont. Final wt. of cont. %Cont. Removed % Average % Overall
Mrs. Meyers Clean Day Lavender Tub & Tile Cleaner Ceramic 0.0936 0.0095 89.85 89.38 65.70
0.1062 0.0101 90.49
0.2006 0.0245 87.79
Plastic 0.3697 0.1868 49.47 47.55
0.4208 0.2129 49.41
0.3420 0.1923 43.77
Chrome 0.2210 0.0715 67.65 60.16
0.2959 0.1023 65.43
0.2725 0.1433 47.41
Cleanyst Free & Clear Tub & Tiles Cleaner Ceramic 0.2225 0.1002 54.97 46.01 43.06
0.2763 0.1726 37.53
0.3826 0.2084 45.53
Plastic 0.4444 0.3098 30.29 31.11
0.3579 0.2709 24.31
0.3540 0.2169 38.73
Chrome 0.3569 0.2024 43.29 52.05
0.2056 0.0816 60.31
0.2909 0.1380 52.56

Success Rating:

A cleanliness study, addressing only various analytical techniques.

Conclusion:

Both cleaners were ineffective at removing bathroom soil on a variety of surfaces.

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