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Trial Number 2

Trial Purpose:

To evaluate supplied product for cloth stain cleaning.

Date Run:

04/13/2015

Experiment Procedure:

The purpose of this evaluation was to assess effectiveness of spot and stain removal chemicals by rating the removal of specific staining agents.
Eight almond white tufted cut pile test carpet measuring 18 inch by 24 inch were stained with eight staining agents for each cleaner. Two staining agent were applied to the test carpet in triplicate, spaced out at 2.5 inches. The staining agent was applied to the surface using a trigger pump spray bottle capable of delivering 2.5 +/- 0.5 ml of stain mixture. The spray was focused within a staining ring measuring 1.5 inches wide by 1.2 inches high.
The eight staining agents included mustard, catsup, coffee, grape juice, black permanent marker (2 1” lines instead of 2.5 ml), dirty motor oil, AATCC synthetic soil and chocolate syrup. These staining agents were used according to the dilution ratios listed in the table below.
Staining Agent Dilution ratio
Mustard 1:2 mustard:water
Catsup 1:3 catsup:water
Hot Coffee 60 deg +/-3C 1 teaspoon coffee to 175 ml water
Purple Grape Juice Full concentration
Black Permanent Marker N/A
Dirty Motor Oil 1:1 oil:heptane*
AATCC Synthetic Soil 0.5 grams/100 ml water
Chocolate Syrup 1:4 chocolate:water

*heptane used in place of tetradecane
The staining agent mixture was poured into the spray bottle. The nozzle of the bottle was centered inside the staining ring and three pumps of the spray bottle were performed to deliver the 2.5 ml of mixture to the test carpet. The staining ring was left in place until the staining agent was completely soaked into the test carpet. The ring was rinsed in between each staining location. The two completed test carpets were allowed to dry for 24 hours +/- 2 hours before conducting the stain removal procedure.
Following the overnight drying, any excess solid staining agent was removed from the test carpet. The cleaning agent was applied to the surface so that the stain was saturated. The solution was allowed to sit on the stain for 2 minutes. The saturated stain was blotted with a clean dry Kimberly Clark Reinforced wiper towel for 30 times. Any transfer of the stain/cleaning agent to the towel was noted. At this point, the cleaning solution was applied to the surface and blotted until the stain was completely removed or three applications of the cleaning solution were performed. The total number of applications was recorded for each stain. The test carpet was allowed to sit for another 24 +/-2 hours to dry before evaluating the stains.

A minimum of three lab personnel were used to evaluate the stain removal efficacy which were then averaged together for the final rating. The evaluations were based on the following scale:
The evaluations were based on the following scale:
Clean Rating Key
1 No Stain
2 Slight Stain
3 Noticeable Stain
4 Considerable Stain
5 Severe Stain

Chemistries Evaluated: DG-7 (20%), Stain Away

Trial Results:

Light Analysis:          
Cleaner: DG-7 (20%)          
  Initial L Dirty L Final L % Change Ave %Change
Mustard          
  66.76 61.94 66.09 -1  
  66.76 61.7 67.57 1.21  
  66.76 62.89 66.61 -0.22 0
Catsup          
  66.76 52.41 65 -2.64  
  66.76 57.05 59.71 -10.56  
  66.76 54.35 61.37 -8.07 -7.09
Hot Coffee          
  66.76 58.24 68.4 2.46  
  66.76 57.91 68.83 3.1  
  66.76 61.06 67.67 1.36 2.31
Grape Juice          
  66.76 55.47 69.79 4.54  
  66.76 59.19 68 1.86  
  66.76 65.35 69.48 4.07 3.49
Black Marker          
  66.76 21.17 39.15 -41.36  
  66.76 36.12 44.51 -33.33  
  66.76 32.49 34.77 -47.92 -40.87
Motor Oil          
  66.76 63.31 65.23 -2.29  
  66.76 58.86 66.54 -0.33  
  66.76 48.77 65.45 -1.96 -1.53
Synthetic Soil          
  66.76 28.81 35.81 -46.36  
  66.76 27.21 44.24 -33.73  
  66.76 21.55 45.73 -31.5 -37.2
Chocolate Syrup          
  66.76 48.57 57.58 -13.75  
  66.76 51.83 54.1 -18.96  
  66.76 50.33 56.4 -15.52 -16.08
Cleaner: Stain Away Initial L Dirty L Final L % Change Ave %Change
Mustard          
  66.76 63.51 65.35 -2.11  
  66.76 59.87 62.46 -6.44  
  66.76 53.74 62.2 -6.83 -5.13
Catsup          
  66.76 56.5 64.12 -3.95  
  66.76 52.28 62.17 -6.88  
  66.76 56.71 62.24 -6.77 -5.87
Hot Coffee          
  66.76 57.99 66.16 -0.9  
  66.76 60.76 66.94 0.27  
  66.76 59.91 61.85 -7.35 -2.66
Grape Juice          
  66.76 57.44 69.29 3.79  
  66.76 58.61 65.09 -2.5  
  66.76 57.5 70.34 5.36 2.22
Black Marker          
  66.76 24.42 26.19 -60.77  
  66.76 30.39 31.93 -52.17  
  66.76 26.42 25.47 -61.85 -58.26
Motor Oil          
  66.76 67.44 70 4.85  
  66.76 60.69 65.92 -1.26  
  66.76 66.12 68.12 2.04 1.88
Synthetic Soil          
  66.76 35.93 57.77 -13.47  
  66.76 57.11 61.19 -8.34  
  66.76 51.23 51.82 -22.38 -14.73
Chocolate Syrup          
  66.76 49.73 64.98 -2.67  
  66.76 49.13 64.35 -3.61  
  66.76 46.01 63.17 -5.38 -3.88
           
Result of Visual Analysis:          
Cleaner: DG-7 (20%)          
  Clean Visual: Ave Visual Overall % Average Visual  
Mustard          
  3 4 4 3.7  
  3 4 4 3.7  
  3 3.5 3 3.2 3.5
Catsup          
  3 3 3 3  
  2 3 3 2.7  
  2 3 3 2.7 2.8
Hot Coffee          
  1 1.5 1.5 1.3  
  1 1 1 1  
  1 1 1 1 1.1
Grape Juice          
  1 1.5 1 1.2  
  1 1.5 1.5 1.3  
  1 1 1 1 1.2
Black Marker          
  5 5 5 5  
  5 4.5 4.5 4.7  
  5 4 4 4.3 4.7
Motor Oil          
  3 3 3.5 3.2  
  4 3 4 3.7  
  3 2.5 3 2.8 3.2
Synthetic Soil          
  4 4 3.5 3.8  
  4 3.5 4 3.8  
  5 4.5 4 4.5 4.1
Chocolate Syrup          
  4 4.5 4.5 4.3  
  4 4.5 4 4.2  
  3 3 3 3 3.8
Cleaner: Stain Away          
  Clean Visual:   Ave Visual Overall % Average Visual
Mustard          
  2 2.5 2 2.2  
  2 2.5 2.5 2.3  
  2 2 2 2 2.2
Catsup          
  1 2 2 1.7  
  2 2.5 2 2.2  
  1 2.5 2.5 2 1.9
Hot Coffee          
  1 1 1 1  
  1 1 1 1  
  1 1 1 1 1
Grape Juice          
  1 1 1 1  
  1 1.5 1 1.2  
  1 1 1 1 1.1
Black Marker          
  5 5 5 5  
  5 4.5 4.5 4.7  
  5 4.5 5 4.8 4.8
Motor Oil          
  2 1.5 2 1.8  
  2 1.5 1.5 1.7  
  3 1.5 2 2.2 1.9
Synthetic Soil          
  3 3 3 3  
  2 2.5 2 2.2  
  2 2 2 2 2.4
Chocolate Syrup          
  1 1.5 1 1.2  
  1 1.5 1.5 1.3  
  1 1.5 1.5 1.3 1.3

Success Rating:

A cleanliness study, addressing only various analytical techniques.

Conclusion:

An effective cleaner is based on its %Light Average Change, a % change of less than 15% is considered to be an effective cleaner. A %Light Average Change is a comparison between the cleaned and initial values of the carpet’s Light value change. A cleaner that has a value %change of less than 15% is considered to have gone back to its original state of the carpet (when it is not dirtied). An average visual change of 3 and higher is considered to be visually ineffective. Based on the standard %Light Average Change, the cleaner DG-7 at 20% dilution was not effective at removing black permanent marker, synthetic soil and chocolate syrup. The least visually effective stains being removed by cleaner DG-7 were mustard, black permanent marker, motor oil, synthetic soil and chocolate syrup. In addition to that cleaner Stain Away was only ineffective by both standards in removing black permanent marker. Overall cleaner Stain Away would be more effective at removing stains from carpets over DG-7 at a 20% dilution.

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