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Trial Number 1

Client Number 344

Project Number 1

Trial Purpose:

To evaluate supplied product for kitchen grease cleaning

Date Run:

04/05/2011

Experiment Procedure:

Preweighed Polycarb and stainless-steel coupons were coated with a DCC-17 kitchen grease mix (lard, vegetable shortening, vegetable oil) using a handheld swab. Coupons sat over night to allow the grease to cool/harden onto the surfaces (if possible). After sitting, a second weighing was performed to determine the amount of grease that was added to each coupon. Three coupons were immersed into cleaning solutions at room temperature and cleaned for 25 minutes. At the end of the cleaning, coupons were rinsed for 30 seconds with tap water, dried and weighed. Efficiency was calculated for each coupon cleaned. A follow up 30 second rinse with tap water was used to remove any remaining residue on the surface. The coupons were dried and weighed a final time. Efficiency was calculated a final time for each coupon cleaned.

In addition to the gravimetric analysis, visual observations were made.

Trial Results:

Neither product was consistently successful in removing the kitchen grease from the two substrates. In both cases, residue was left behind on the polycarbonate surfaces. The comparative products worked better than the supplied product under the conditions tested for the stainless steel. The table below lists the amount of soil added, the amount remaining, the removal efficiency and observations made.

1st Rinse

Cleaner Initial wt. Final wt. % Cont Removed Observations Substrate Average
Delta Green Heavy Duty Cleaner Polycarb          
  0.0334 0.044 -31.74 Cleaner residue on surface -27.59%
  0.0289 0.039 -34.95 Cleaner residue on surface  
  0.0217 0.0252 -16.13 Cleaner residue on surface  
Delta Green Heavy Duty Cleaner Stainless steel          
  0.0218 0.0031 85.78 Visually cleaner vs TAP S.S 87.27%
  0.0158 0.0012 92.4    
  0.0189 0.0031 83.6    
TAP Kitchen Cleaner Polycarb          
  0.0229 0.0139 39.3 Cleaner residue on surface 47.24%
  0.0243 0.0138 43.21 Cleaner residue on surface  
  0.0206 0.0084 59.22 Cleaner residue on surface  
TAP Kitchen Cleaner Stainless steel          
  0.0357 0.0119 66.67    
  0.0357 0.0462 -29.41    
  0.0365 0.0164 55.07    

The second rinse resulted in an improvement for both cleaning products from both surfaces. The comparative product still outperformed the supplied product on the stainless steel but the supplied product removed more from the polycarbonate. The overall averages for both surfaces resulted in both products removing around 60% of the grease.

2nd Rinse

Cleaner Initial wt. Final wt. % Cont Removed Observations Substrate Average
Delta Green Heavy duty cleaner Polycarb          
  0.0334 0.0162 51.49   34.76%
  0.0289 0.0195 32.52    
  0.0217 0.0173 20.27    
Delta Green Heavy dory cleaner Stainless Steel          
  0.0218 0.0024 88.99   90.86%
  0.0158 0.0005 96.83    
  0.0189 0.0025 86.77    
TAP Kitchen cleaner Polycarb          
  0.0229 0.0127 44.54   51.77%
  0.0243 0.0126 48.14    
  0.0206 0.0077 62.62    
TAP Kitchen cleaner Stainless Steel          
  0.0357 0.0082 77.03   67.37%
  0.0357 0.0154 56.86    
  0.0365 0.0116 68.21    

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The supplied product provided more consistent soil removal from both surfaces coated with a kitchen grease mixture when using immersion cleaning and multiple rinsing steps. Both products removed around 60% of the soil from the surfaces using no mechanical agitation or wiping.

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