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Trial Number 0

Trial Purpose:

To evaluate second supplied product for Green Seal GS 34 degreasing standard.

Date Run:

04/16/2014

Experiment Procedure:

Two types of soils were prepared individually. The first soil, maintenance soil, consisted of 10 grams of carbon black, 10 grams iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil. Each component was placed in a 750 beaker and mixed for 20 minutes at room temperature using a magnetic stirrer. The second soil, production soil, was made by mixing 200 ml Quench Oil and 200 ml cutting oil for 20 minutes at room temperature using a magnetic stirrer in a second 750 ml beaker.

Approximately 100 mg of each soil was applied to a precleaned and preweighed stainless steel coupon onto one side only with a hand held swab. No soil was applied to the two control coupons. The maintenance soil for all three coupons was baked in an oven for 30 minutes at a temperature of 40° C (105 F). For the production soil, all three coupons were baked in an oven for thirty minutes at 105° C (220 F). The coupons were then allowed to cool to room temperature and weigh a second time (soiled mass = B).

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 1 spray of cleaning solution. Each coupon was sprayed 1 time 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.

Trial Results:

Cleaner – Conc - Soil Initial wt Final wt % Removed
SKW QUAB 5% Soil 1      
  0.0565 0.0096 83.01
  0.1060 0.0080 92.45
  0.0785 0.0108 86.24
SKW QUAB 10% Soil 1      
  0.0318 0.0062 80.50
  0.0196 0.0073 62.76
  0.0838 0.0064 92.36
SKW QUAB 15% Soil 1      
  0.0490 0.0059 87.96
  0.0613 0.0065 89.40
  0.0671 0.0063 90.61
Purple Power 5% Soil 1      
  0.0384 0.0039 89.84
  0.0209 0.0042 79.90
  0.0349 0.0034 90.26
Purple Power 10% Soil 1      
  0.0200 0.0020 90.00
  0.0343 0.0025 92.71
  0.0292 0.0027 90.75
Purple Power 20% Soil 1      
  0.0433 0.0014 96.77
  0.0192 0.0001 99.48
  0.0201 0.0006 97.01
Biocircle CB100 20% Soil 1      
  0.0319 0.0008 97.49
  0.0198 0.0000 100.00
  0.0238 0.0018 92.44
SKW QUAB 5% Soil 2      
  0.0809 0.0050 93.82
  0.0866 0.0050 94.23
  0.0907 0.0064 92.94
SKW QUAB 10% Soil 2      
  0.0828 0.0040 95.17
  0.1100 0.0038 96.55
  0.0825 0.0028 96.61
SKW QUAB 15% Soil 2      
  0.0872 0.0079 90.94
  0.0880 0.0065 92.61
  0.0970 0.0042 95.67
Purple Power 5% Soil 2      
  0.0956 0.0046 95.19
  0.1092 0.0036 96.70
  0.0893 0.0018 97.98
Purple Power 10% Soil 2      
  0.1035 0.0041 96.04
  0.1151 0.0030 97.39
  0.0981 0.0044 95.51
Purple Power 20% Soil 2      
  0.1110 0.0033 97.03
  0.0862 0.0026 96.98
  0.0978 0.0034 96.52
Biocircle CB100 20% Soil 1      
  0.1086 0.0190 82.50
  0.0826 0.0016 98.06
  0.0773 0.0015 98.06

Success Rating:

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

Conclusion:

Each supplied cleaner worked to effective levels of cleaning for each soil. Purple Power at 20% demonstrated the most effective level of cleaning for each soil, followed by Biocircle at 20%. The SKW Quab at 15% was comparable to the Purple Power at 5%.

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