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Trial Number 5

Trial Purpose:

To evaluate an additional set of cleaners for toilet bowl cleaning

Date Run:

02/23/2011

Experiment Procedure:

Pre-weighed ceramic, porcelain coupons were coated with Hucker's Soil Formulation (Jiffy creamy peanut butter, salted butter, Arrowhead Mills stone ground wheat flour, egg yolk, evaporated milk, distilled water, printer's ink with boiled linseed oil, Shaws saline solution) 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 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.

Products were selected based on toilet bowl cleaning needs and health and safety options.

Trial Results:

All of the products tested performed better on the porcelain surface as compared with the ceramic. Only one product, PC 101 had an overall average greater than 85% for the combined surface cleanings. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed Surface Efficiency Overall efficiency %
Ceramic TMI bathroom cleaner          
  0.0665 0.0403 39.40 32.41 58.76
  0.0799 0.0398 50.19    
  0.0758 0.0700 7.65    
Porcelain TMI bathroom cleaner          
  0.0847 0.0105 87.60 85.11  
  0.0509 0.0076 85.07    
  0.0519 0.0090 82.66    
Ceramic Clorox 409          
  0.0557 0.0273 50.99 63.34 77.20
  0.0969 0.0113 88.34    
  0.0584 0.0288 50.68    
Porcelain Clorox 409          
  0.0606 0.0142 76.57 91.06  
  0.1825 0.0053 97.10    
  0.1060 0.0005 99.53    
Ceramic RMS Tough Job          
  0.1234 0.0196 84.12 75.60 78.95
  0.0302 0.0085 71.85    
  0.1052 0.0307 70.82    
Porcelain RMS Tough Job          
  0.0591 0.0094 84.09 82.31  
  0.0379 0.0052 86.28    
  0.0891 0.0209 76.54    
Ceramic Delta          
  0.0821 0.0308 62.48 57.92 73.44
  0.0859 0.0236 72.53    
  0.0480 0.0294 38.75    
Porcelain Delta          
  0.0736 0.0033 95.52 88.95  
  0.0528 0.0086 83.71    
  0.0517 0.0064 87.62    
Ceramic MD Stetson PC101          
  0.0619 0.0062 89.98 80.63 86.62
  0.0537 0.0189 64.80    
  0.0968 0.0125 87.09    
Porcelain MD Stetson PC101          
  0.0632 0.0066 89.56 92.62  
  0.0571 0.0059 89.67    
  0.0440 0.0006 98.64    
Ceramic Active Ion          
  0.0559 0.0386 30.95 44.88 66.50
  0.0767 0.0383 50.07    
  0.0897 0.0416 53.62    
Porcelain Active Ion          
  0.0452 0.0050 88.94 88.11  
  0.0360 0.0034 90.56    
  0.0330 0.0050 84.85    

Success Rating:

A follow up test, usually based on company input.

Conclusion:

One product had an overall average greater than 85% for the toilet bowl soil removal.

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