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Trial Number 492

Trial Purpose:

A non-client test evaluating the effectiveness of solid dish soap against comparative liquid dish soaps using a dish brush to remove ASTM 4009 Soil B from ceramic plates.

Date Run:

09/08/2020

Experiment Procedure:

Initial weights of eleven clean ceramic plates per dish soap were taken before soiling with six grams of 4009 Soil B (50% All-Purpose Flour, 48% Crisco Shortening, and 2% Olive Oil) and air-dried for 24 hours at room temperature (68˚F). Dirty weights were taken the next day. The dish soaps, both solid and liquid, were placed on a flat surface before swirling a new soap dish brush per product for five seconds to pick up the soap. Four liters of tap water heated to 120°F, which was recorded when poured sequentially into the washing basin. Twenty seconds after the reservoir was prepared, the manual cleaning method began. Each plate was washed at an angle, half-submerged in the water, cleaning both the front and back sides of each plate with the brush in a circular motion for 10 seconds before a one-second rinse with cold tap water and air-dried for 24 hours. This process was repeated for each of the dish soaps. Final weights were taken the next day.

Trial Results:

Cleaner Initial wt Cont. wt Clean wt. Initial wt of cont. Final wt of cont. %Cont Removed Average % Removal
Ardent Goods Dish Soap 438.98 441.39 439.15 2.4100 0.1700 92.95 95.19
480.75 483.10 480.83 2.3500 0.0800 96.60
428.11 430.87 428.22 2.7600 0.1100 96.01
459.92 462.51 459.97 2.5900 0.0500 98.07
433.87 436.78 433.90 2.9100 0.0300 98.97
466.05 468.80 466.09 2.7500 0.0400 98.55
417.47 420.12 417.60 2.6500 0.1300 95.09
465.12 467.55 465.18 2.4300 0.0600 97.53
401.54 404.13 401.80 2.5900 0.2600 89.96
397.48 399.79 397.58 2.3100 0.1000 95.67
453.77 456.29 453.83 2.5200 0.0600 97.62
Dawn Liquid Dish Soap 429.90 432.30 430.09 2.4000 0.1900 92.08 95.98
468.17 470.68 468.28 2.5100 0.1100 95.62
436.58 438.96 436.64 2.3800 0.0600 97.48
464.19 466.71 464.32 2.5200 0.1300 94.84
468.93 471.44 468.92 2.5100 -0.0100 100.40
425.55 428.25 425.59 2.7000 0.0400 98.52
421.92 424.50 422.00 2.5800 0.0800 96.90
410.67 413.53 410.79 2.8600 0.1200 95.80
446.79 449.20 446.87 2.4100 0.0800 96.68
449.85 452.36 449.94 2.5100 0.0900 96.41
469.38 471.73 469.60 2.3500 0.2200 90.64
Joy Liquid Dish Soap 438.98 441.20 439.06 2.2200 0.0800 96.40 96.33
480.75 482.84 480.78 2.0900 0.0300 98.56
428.11 430.39 428.16 2.2800 0.0500 97.81
459.92 461.95 460.07 2.0300 0.1500 92.61
433.87 436.06 433.88 2.1900 0.0100 99.54
466.05 468.41 466.12 2.3600 0.0700 97.03
417.47 419.68 417.60 2.2100 0.1300 94.12
465.12 466.49 465.16 1.3700 0.0400 97.08
401.54 403.66 401.68 2.1200 0.1400 93.40
397.48 399.54 397.58 2.0600 0.1000 95.15
453.77 456.35 453.91 2.5800 0.1400 94.57
Mrs. Meyers Dish Soap 429.90 431.93 429.98 2.0300 0.0800 96.06 95.77
468.17 470.40 468.28 2.2300 0.1100 95.07
436.58 438.32 436.67 1.7400 0.0900 94.83
464.19 466.51 464.25 2.3200 0.0600 97.41
468.93 471.12 469.02 2.1900 0.0900 95.89
425.55 427.28 425.59 1.7300 0.0400 97.69
421.92 423.92 422.07 2.0000 0.1500 92.50
410.67 412.91 410.70 2.2400 0.0300 98.66
446.79 449.04 446.97 2.2500 0.1800 92.00
449.85 452.22 450.03 2.3700 0.1800 92.41
469.38 471.76 469.50 2.3800 0.1200 94.96

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 were considered effective at removing 4009 Soil B from ceramic plates using a dish brush.

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