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Trial #1

Trial #1

To evaluate janitorial cleaners for dirt removal on a variety of surfaces for which they may be used.

2016

23

2

0

0

Coupon

02/29/2016

0.50

Manual Wipe

Alicia Melvin
Josephine Garfield
Vinh Tran

Ceramics
Plastic
White Board

Food
Greases
Oil

None

Air dry

Gravimetric

Nine coupons for each sample (three ceramic, three plastic, and three painted steel) were weighed for initials. Using a swab, coupons were then dirtied with 0.5 grams of DCC-17 and air dried at 68˚F overnight. Dirty weights were then collected the next day. The cleaning samples were diluted to requested amounts (Peroxi-det (1/128); Peroxi-det (10/128); MD Stetson PC 120 (RTU); Peroxi-det (10%)) and placed into the same brand lab testing spray bottles.

Three coupons of the same substrate were placed into a Gardner Straight Line Washability unit. A Wypall X60 reinforced wipe was attached to the cleaning sled and treated with two sprays of cleaning solution. Each coupon was treated with the same cleaning solution two times. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (30 seconds of cleaning). Coupons were placed back on the tray and then weighed for a final weight. If coupon's gravimetric final results were off, coupons were reweighed the next day to allow substrates to fully dry.

Ceramic substrates had the lowest removal out of all the substrates. Part of this is due to the substrate’s semi vitreous material when cut into coupons. Allowing the coupons to dry overnight allowed for gravimetric results to reach effective percentage removal.

Cleaner Substrate Initial wt Final wt % Removed Average Overall Ave
Peroxi-det (1/128)
  Ceramic 0.384 0.0699 81.8 85.57 89.8
    0.3926 0.06 84.72    
    0.5069 0.0497 90.2    
  Plastic 0.4552 0.0342 92.49 93.44  
    0.4158 0.0215 94.83    
    0.419 0.0293 93.01    
  Painted Steel 0.3945 0.0454 88.49 90.4  
    0.4674 0.0348 92.55    
    0.4308 0.0424 90.16    
Peroxi-det (10/128)
  Ceramic 0.5724 0.0498 91.3 85.08 90.9
    0.3828 0.0841 78.03    
    0.4787 0.0674 85.92    
  Plastic 0.4852 0.0358 92.62 94.52  
    0.4825 0.0244 94.94    
    0.4855 0.0194 96    
  Painted Steel 0.4926 0.0367 92.55 93.09  
    0.3765 0.0347 90.78    
    0.461 0.0187 95.94    
MD Stetson PC 120(RTU)
  Ceramic 0.4267 0.0013 99.7 90.47 93.49
    0.4393 0.0652 85.16    
    0.5159 0.0693 86.57    
  Plastic 0.4847 0.0361 92.55 93.4  
    0.4713 0.0092 98.05    
    0.4823 0.0502 89.59    
  Painted Steel 0.4948 0.0167 96.62 96.61  
    0.4747 0.0192 95.96    
    0.4854 0.0134 97.24    
Peroxi-det (10%)
  Ceramic 0.4424 0.0125 97.17 92.86 93.36
    0.4519 0.0434 90.4    
    0.4678 0.042 91.02    
  Plastic 0.3868 0.0956 75.28 91.32  
    0.3796 0.0047 98.76    
    0.3992 0.0003 99.92    
  Painted Steel 0.3692 0.0179 95.15 95.9  
    0.3597 0.0157 95.64    
    0.3543 0.0109 96.92    

All the cleaners were effective at removing around 90% or more of the DCC-17 soil from all substrates.

No relation

Name Class Section
Document Evaluation #0 Evaluation 3
Document Evaluation #1 Evaluation 3
Document Evaluation #2 Evaluation 3
Document Evaluation #3 Evaluation 3
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