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Trial Number 2

Trial Purpose:

To evaluate supplied products for all purpose cleaning using manual cleaning.

Date Run:

08/11/2015

Experiment Procedure:

Soil Preparation: A mixture of three cooking oils/greases was made. A melt blend of 33% vegetable shortening, 33% lard, 33% vegetable oil and 1% carbon lampblack was made up fresh for the testing.
Preweighed ceramic, painted steel and plastic coupons were coated with DCC17 soil using a hand held swab and were 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 Wypall X60 reinforced wipe was attached to the cleaning sled and soaked with 1 spray of cleaner. Each coupon was sprayed with 1 spray of cleaner. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~30 seconds). An additional wipe cycle was done with one spray of water on each coupon and new Wypall for rinsing purposes. Coupons were let to dry 24 hours before reweighting and efficiency was calculated.

Cleaners Evaluated: Easy Scrub Liquid with Bleach and Soft Scrub with bleach.

Trial Results:

Cleaner Initial wt Final wt % Removed % Average Removal
Easy Scrub Liquid w/bleach_Ceramic         
  0.5178 0.0258 95.02  
  0.5230 0.0620 88.15  
  0.5016 0.0358 92.86 92.01
Easy Scrub Liquid w/bleach_Plastic         
  0.5114 0.0330 93.55  
  0.4966 0.0110 97.78  
  0.5113 0.0223 95.64 95.66
Easy Scrub Liquid w/bleach_Painted Steel         
  0.5139 0.0211 95.89  
  0.5023 0.0220 95.62  
  0.5038 0.0181 96.41 95.97
Softscrub w/bleach_Ceramic         
  0.5066 0.0368 92.74  
  0.5107 0.0524 89.74  
  0.5136 0.0249 95.15 92.54
Softscrub w/bleach_Plastic         
  0.5140 0.0183 96.44  
  0.5040 0.0162 96.79  
  0.5011 0.0155 96.91 96.71
Softscrub w/bleach_Painted Steel         
  0.5062 0.0324 93.60  
  0.5038 0.0338 93.29  
  0.5068 0.0185 96.35 94.41

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Soft Scrub with bleach and Easy Scrub Liquid with bleach both were effective at soil removal from tested surfaces. Both cleaners resulted with very close removal efficiencies with Soft Scrub averaging at 94.56% and Easy Scrub at 94.55%. With very little difference, Soft Scrub was slightly more effective at removal of soil from ceramic and plastic surfaces and Easy Scrub was more effective at removal of soil from painted steel surfaces.

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