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Trial Number 0

Client Number 330

Project Number 1

Trial Purpose:

To evaluate the supplied solvents for all purpose cleaning.

Date Run:

06/21/2010

Experiment Procedure:

The two supplied solvent were used at full strength and at a 50:50 mix with each other. Solvents were compared with Dowanol DPM - dipropylene glycol methyl ether.

Preweighed ceramic, plastic G-10 and painted steel coupons were coated with Hucker's Soil Formulation (Jiffy 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 handheld 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 Kimberly-Clark Wypal reinforced paper towel 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. A second soil consisting of DCC 17 soil (Mix lard, vegetable oil, vegetable shortening and carbon black) was applied to the same coupon types and cleaned in the same manner as the Hucker’s soil.

Trial Results:

During cleaning trials, the ceramic coupons were noted that the weights being recorded did not match the visual observations. Some of the calculated efficiencies were in excess of 100% when the coupons were still visible dirty. Likewise, some coupons that had more than half the soil removed resulted in less than 50% calculated efficiency. The plastic coupons showed more consistent results. The table lists the amount of soil added, the amount removed and the cleaning efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
SG21000D- ceramic-soil 1      
  0.2876 -0.0205 107.13
  0.7628 0.2632 65.50
  2.6844 1.3035 51.44
SG22002D- ceramic-soil 1      
  2.4305 0.7559 68.90
  0.3426 0.0483 85.90
  1.1151 0.3936 64.70
50/50- ceramic-soil 1      
  0.4683 0.0913 80.50
  2.5607 1.0807 57.80
  0.1353 -0.0869 164.23
DBM- ceramic-soil 1      
  0.0579 -0.3403 687.74
  0.4850 0.3260 32.78
  2.6159 1.1020 57.87
SG21000D- soil1 plastic      
  0.6037 0.1318 78.17
  0.2053 0.1476 28.11
  0.1733 0.1129 34.85
SG22002D- soil1 plastic      
  0.3084 0.0479 84.47
  0.2170 0.0318 85.35
  0.4671 0.0475 89.83
50/50- soil1 plastic      
  0.2352 0.0356 84.86
  0.2054 0.0422 79.45
  0.1530 0.0257 83.20
DBM- soil1 plastic      
  0.4949 0.0403 91.86
  0.3485 0.0381 89.07
  0.2706 0.0497 81.63
SG21000D- soil 2 ceramic      
  2.2324 0.4703 78.93
  1.2771 0.5026 60.65
  2.3888 0.7591 68.22
SG22002D- soil 2 ceramic      
  1.4913 0.4298 71.18
  1.3822 0.2189 84.16
  0.6064 0.0791 86.96
50/50- soil 2 ceramic      
  0.9010 -0.0383 104.25
  1.3457 0.3286 75.58
  0.8817 0.2331 73.56
DBM-soil 2 ceramic      
  1.5586 0.5899 62.15
  1.0532 0.3194 69.67
  2.5796 0.8665 66.41
SG21000D- soil 2 plastic      
  0.7165 0.1630 77.25
  0.4241 0.1761 58.48
  0.9887 0.1921 80.57
SG22002D- soil 2 plastic      
  0.5383 0.1779 66.95
  0.3018 0.1579 47.68
  0.7670 0.0439 94.27
50/50- plastic-soil 2      
  0.5767 0.0493 91.45
  0.6125 0.0463 92.44
  0.4419 0.0691 84.36
DBM- plastic-soil 2      
  0.3528 0.0663 81.21
  0.4981 0.0529 89.38
  0.7739 0.0681 91.20

Summary

  Overall average Plastic without Ceramic-huckers DCC Grease Hucker's
SG21000D 65.77 59.57 62.80 70.68 60.87
SG22002D 77.53 78.09 78.98 75.20 79.86
50/50 89.31 85.96 85.46 86.94 91.67
DBM 125.08 87.39 80.29 76.67 173.49

Success Rating:

A follow up test, usually based on company input.

Conclusion:

With some inconsistent calculated efficiencies with ceramic coupons, a follow test will be conducted on porcelain coupons and stainless-steel coupons. The supplied solvents did have positive results for potential all-purpose cleaning solvents. The average removal for both soils from the plastic surface was 85% for the 50:50 mix which was about the same as the DBM comparison solvent. Typically, the 85% level is considered to be effective for the TURI Lab testing methodology.

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