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Trial Number 2

Trial Purpose:

Redo of All-purpose Hucker's Soil test to investigate outliers found previously.

Date Run:

04/25/2024

Experiment Procedure:

Three coupons of each substrate were used per cleaning product, for a total of 24 coupons.  Each coupon was weighed using a gravimetric balance and had their weights recorded.  Each coupon was then soiled with about 0.5 grams of Hucker's soil by using a swab to administer the contaminant down the center of the coupons.  The contaminated coupons were then left to dry for 24 hours to allow the Hucker's soil to adhere to the coupons.  After the 24 hour drying period, each coupon was weighed again, and had their 'dirty weights' recorded.  The coupons were then cleaned with their respective cleaning product using the Straight Line Washability Unit (or SLW) to ensure a standard pressure is applied to each coupon while being manually wiped.  Two sprays of the correct cleaner was applied to a wypall that is attached to the cleaning sled of the SLW to wipe the soil away and two sprays were applied directly to each coupon (meaning each coupon was cleaned with about 2.5 ml of cleaning chemisty).  The SLW unit was run for 20 cycles (20 back and forth motions) for each coupon.  Once cleaned, the coupons were allowed to air dry before having their final weights recorded

Trial Results:

Cleaner Substrate Initial wt of cont. Final wt of cont. %Cont Removed Average % Removal Average Cleaner Removal
Bubbl Ceramic 0.274 0.0087 96.82 97.66 95.19
0.1258 0.0028 97.77
0.3192 0.0052 98.37
Plastic 0.2347 0.0177 92.46 95.76
0.2938 0.0109 96.29
0.2045 0.003 98.53
Painted Metal 0.1821 0.0156 91.43 92.14
0.3009 0.0199 93.39
0.3528 0.0296 91.61
Formula 409 Ceramic 0.3858 0.0006 99.84 97.82 99.03
0.2619 0.0018 99.31
0.1566 0.0089 94.32
Plastic 0.4288 -0.0078 101.82 99.73
0.812 -0.0008 100.10
0.1907 0.0052 97.27
Painted Metal 0.5296 0.0015 99.72 99.52
0.4362 0.0058 98.67
0.3277 -0.0006 100.18
Meyers Everyday Probiotic Shower Spray Ceramic 0.2443 0.0069 97.18 98.45 96.71
0.2649 0.0036 98.64
0.3537 0.0016 99.55
Plastic 1.3689 0.0206 98.50 94.42
0.9186 0.0532 94.21
0.2667 0.0252 90.55
Painted Metal 0.2005 0.015 92.52 97.26
0.3485 0.0017 99.51
1.1094 0.0029 99.74

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

All products tested are effective in removing Hucker's soil from Ceramic, Plastic, and Painted Metal surfaces.  The Bubl product performed comparatively to both comparative. products.

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