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Trial Number 3

Client Number 517

Project Number 1

Trial Purpose:

Redo of All-purpose DCC17 test to investigate previously found outliers.

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 DCC-17 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 DCC-17 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 0.3793 0.0118 96.89 94.31 92.05
0.1306 0.0106 91.88
0.4271 0.0249 94.17
Plastic 0.2111 0.0268 87.30 90.22
0.2811 0.0303 89.22
0.5462 0.032 94.14
Painted Metal 0.259 0.0161 93.78 91.60
0.1106 0.0104 90.60
0.1389 0.0133 90.42
Formula 409 Ceramic 0.217 0.0042 98.06 94.82 94.74
0.2318 0.0078 96.64
0.1065 0.0109 89.77
Plastic 0.2726 0.0119 95.63 95.64
0.2586 0.0041 98.41
0.2347 0.0167 92.88
Painted Metal 0.1863 0.003 98.39 93.76
0.1445 0.0159 89.00
0.2576 0.0157 93.91
Meyers Everyday Probiotic Shower Spray Ceramic 0.2748 0.0026 99.05 95.84 93.59
0.1657 0.0048 97.10
0.0845 0.0073 91.36
Plastic 0.2156 0.0155 92.81 94.02
0.3567 0.0139 96.10
0.2129 0.0146 93.14
Painted Metal 0.137 0.0135 90.15 90.90
0.1664 0.0178 89.30
0.1778 0.012 93.25

Success Rating:

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

Conclusion:

Although all products, struggled more to remove the DCC17 soil than the Hucker's soil, all products tested are effective in removing DCC17 soil from Ceramic, Plastic, and Painted Metal.  The Bubl product performed comparatively to the two comparative products.

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