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Trial Number 30

Trial Purpose:

To evaluate three supplied products for all purpose cleaning.

Date Run:

07/14/2006

Experiment Procedure:

One supplied cleaning products were diluted with DI water to vendor recommended concentration for all purpose Cleaning (20:11) and the other two were used at full strength.

Nine preweighed ceramic, nine plastic G-10 and nine painted steel coupons were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) using a hand held swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.

Three coupons were placed into a Gardner Straight Line Washability unit. A Professional Painter's Rag was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The cleaning unit was run for 20 cycles (~33 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded, efficiencies were calculated and recorded.

Trial Results:

All three products worked well on the painted steel and fiberglass coupons. Only the Heavy Duty cleaner had moderate success on the ceramic coupons. The table lists the amount of soil added, the amount remaining and the percent removed for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Degreaser Steel 1.2408 0.0390 96.86
0.8825 0.0409 95.37
0.9002 0.0272 96.98
Heavy Duty Steel 0.3460 0.0166 95.20
0.8724 0.0227 97.40
0.8011 0.0196 97.55
Cogent Sodium hypochlorite Steel 0.7091 0.0226 96.81
0.5136 0.0527 89.74
0.7826 0.0415 94.70
Degreaser Plastic 0.8437 0.0083 99.02
0.8274 0.0154 98.14
0.3658 0.0116 96.83
Heavy Duty Plastic 0.6236 0.0585 90.62
1.0084 0.0146 98.55
0.8681 0.0378 95.65
Cogent Sodium hypochlorite Plastic 0.8569 0.0303 96.46
1.0498 0.0299 97.15
0.5279 0.0402 92.38
Degreaser Ceramic 0.4465 0.1783 60.07
0.5850 0.1048 82.09
1.2622 0.2015 84.04
Heavy Duty Ceramic 0.9430 0.2057 78.19
1.1075 0.1195 89.21
1.1374 0.1425 87.47
Cogent Sodium hypochlorite Ceramic 0.6902 0.1802 73.89
0.9517 0.2429 74.48
0.8444 0.2760 67.31

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Despite having some trouble with the ceramic coupons, the three products all removed over 85% of the Hucker's soil.

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