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Trial Number 44

Client Number 232

Project Number 1

Trial Purpose:

To evaluate supplied products for manual dish washing.

Date Run:

10/24/2007

Experiment Procedure:

The supplied cleaning products were used at 0.25% made with tap water at 100 F.

Preweighed stainless steel, plastic and glass coupons were coated with a 50/50 mix of SSL Soil 3 and 4. SSL 3 contains Hucker's Soil: Distilled water 45.8%, Evaporated milk 13.8%, Creamy peanut butter 9.2%, Salted butter 9.2%, Stone ground wheat flour 9.2%, Egg yolk 9.2%, Printer's ink with boiled linseed oil 0.9% and Saline solution 2.7 and SSL 4 contains Kitchen Soil: Crisco Shortening 35%; Maxwell House Slow Roast Coffee, 1 tsp/4 oz 25%; Lipton The Brisk Tea, 1 bag/4 oz 25%; Garelick Farms Half and Half 5%; Synthetic Carpet Soil Mix 10%. Contamination was done using a hand held swab. The soiled coupons were allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.

The three sets of coupons were immersed in each solution for 3 minutes and then three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly-Clark WypAll X60 reinforced wipe was attached to the cleaning sled and soaked with the cleaning solutions. The cleaning unit was run for 20 cycles (~33 seconds). At the end of the cleaning, coupons were rinsed with tap water at 120 F for 15 seconds. Coupons were wiped once with a dry paper towel. Final weights were recorded. Efficiencies were calculated and recorded.

Trial Results:

Three of four products removed over 70% of the combined all purpose & kitchen soil mix after soaking for three minutes and wiping for 30 seconds. The table lists the amount of soil added, the amount remaining, the efficiency for each coupon cleaned and the average removal from each substrate type.

Cleaner Initial wt Final wt % Removed Substrate Average
Dawn-ss 0.3484 0.2203 36.77 34.60
  0.3629 0.2719 25.08  
  0.1020 0.0592 41.96  
Dawn-pl 0.1332 0.0842 36.79 58.01
  0.1479 0.0374 74.71  
  0.2393 0.0897 62.52  
Dawn-gl 0.1344 0.0372 72.32 68.70
  0.2982 0.0879 70.52  
  0.1835 0.0674 63.27  
Meyer-ss 0.2175 0.0472 78.30 68.63
  0.1284 0.0407 68.30  
  0.0860 0.0350 59.30  
Meyer-pl 0.1994 0.0520 73.92 77.13
  0.0951 0.0146 84.65  
  0.1379 0.0375 72.81  
Meyer-gl 0.1107 0.0191 82.75 75.21
  0.0864 0.0343 60.30  
  0.1337 0.0233 82.57  
Seventh-ss 0.1459 0.0780 46.54 59.85
  0.1757 0.0486 72.34  
  0.0918 0.0361 60.68  
Seventh-pl 0.0795 0.0119 85.03 89.20
  0.2074 0.0087 95.81  
  0.0974 0.0129 86.76  
Seventh-gl 0.0561 0.0114 79.68 76.85
  0.0863 0.0144 83.31  
  0.1168 0.0379 67.55  
DFC-ss 0.2600 0.0500 80.77 70.44
  0.1481 0.0670 54.76  
  0.1573 0.0381 75.78  
DFC-pl 0.1545 0.0438 71.65 72.73
  0.0772 0.0193 75.00  
  0.1817 0.0517 71.55  
DFC-gl 0.1108 0.0176 84.12 80.40
  0.0621 0.0185 70.21  
  0.0915 0.0120 86.89  

Success Rating:

A follow up test, usually based on company input.

Conclusion:

For the dish washing process, no established level for effectiveness has been set. Values obtained for each product were compared to the other products to determine relative performance. Three products had similar cleaning results, removing 73, 75 and 74%. The fourth product cleaned 53%.

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