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Trial Number 1

Trial Purpose:

To evaluate the efficiency one cleaner on GS 34 Soil-1 and GS 34 Soil- 2 from stainless steel coupons using immersion technique.

Date Run:

05/19/2015

Experiment Procedure:

Twenty-Two sets of stainless steel coupons were weighed, each set consist of three coupons. The first eleven sets were soiled with GS 34 Soil-1 and the other eleven sets were soiled with GS 34 Soil-2. Both soils were applied at the loading of ~100mg. The soiled coupons were oven dried for 30 minutes with 40 °C for GS 34 Soil-1 and 105 °C for GS 34 Soil-2. Dirty weights were recorded for all of coupons after 15 minutes of cooling.

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 cleaning solutions. Each coupon was sprayed 1 time with the same cleaning solution. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~33 seconds).
Final weights were recorded the following day. Efficiencies were calculated and recorded.

Soil 1: Maintenance soil = 10 grams of carbon black, 10 grams iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil.
Soil 2: Production soil = 200 ml Quench Oil and 200 ml cutting oil

Chemistries evaluated: BioCircle_L; BioCircle_Ultra; BioCircle_Aero; BioCircle_CB 100; BioCircle_CB 100_ALU; BioCircle_UNO SF; Simple Green; Chem Free SW4; Aquantene 330; LPS T91; Keteca

Trial Results:

Cleaner Initial wt Final wt % Removed % Average Removed
BioCircle_L soil 1        
  0.0943 0.0033 96.50  
  0.1119 0.0035 96.87  
  0.1080 0.0044 95.93 96.43
BioCircle_L soil 2        
  0.0981 0.0022 97.76  
  0.1003 0.0034 96.61  
  0.1046 0.0042 95.98 96.78
BioCircle_Ultra soil 1        
  0.0993 0.0035 96.48  
  0.1021 0.0066 93.54  
  0.0874 0.0035 96.00 95.34
BioCircle_Ultra soil 2        
  0.1123 0.0028 97.51  
  0.1031 0.0035 96.61  
  0.0967 0.0031 96.79 96.97
BioCircle_Aero soil 1        
  0.1134 0.0031 97.27  
  0.1004 0.0024 97.61  
  0.1074 0.0016 98.51 97.80
BioCircle_Aero soil 2        
  0.0910 0.0000 100.00  
  0.0966 -0.0026 102.69  
  0.0898 0.0035 96.10 99.60
BioCircle_CB100 soil 1        
  0.0996 0.0036 96.39  
  0.1031 0.0033 96.80  
  0.1008 0.0038 96.23 96.47
BioCircle_CB100 soil 2        
  0.0835 -0.0024 102.87  
  0.0684 0.0015 97.81  
  0.0563 0.0010 98.22 99.64
BioCircle_CB100_ALU soil 1        
  0.0965 0.0029 96.99  
  0.0987 0.0029 97.06  
  0.0977 0.0031 96.83 96.96
BioCircle_CB100_ALU soil 2        
  0.0715 0.0050 93.01  
  0.0949 0.0039 95.89  
  0.0902 0.0110 87.80 92.23
BioCircle_UNO SF soil 1        
  0.0988 0.0045 95.45  
  0.1009 0.0045 95.54  
  0.0986 0.0043 95.64 95.54
BioCircle_UNO SF soil 2        
  0.0925 0.0010 98.92  
  0.0965 0.0040 95.85  
  0.2022 0.0049 97.58 97.45
Simple Green soil 1        
  0.0969 0.0048 95.05  
  0.0955 0.0072 92.46  
  0.0957 0.0019 98.01 95.17
Simple Green soil 2        
  0.1065 0.0033 96.90  
  0.1070 0.0022 97.94  
  0.1047 0.0013 98.76 97.87
ChemFree SW4 soil 1        
  0.0992 0.0018 98.19  
  0.0917 0.0019 97.93  
  0.1022 0.0005 99.51 98.54
ChemFree SW4 soil  2        
  0.1018 -0.0011 101.08  
  0.0980 -0.0023 102.35  
  0.0980 -0.0027 102.76 102.06
Aquantene 330 soil 1        
  0.0951 0.0049 94.85  
  0.1003 0.0059 94.12  
  0.1000 0.0049 95.10 94.69
Aquantene 330 soil 2        
  0.1000 0.0018 98.20  
  0.1011 0.0011 98.91  
  0.0992 0.0010 98.99 98.70
LPS 791 soil 1        
  0.0989 0.0041 95.85  
  0.0937 0.0041 95.62  
  0.0967 0.0022 97.72 96.40
LPS 791 soil 2        
  0.0955 0.0039 95.92  
  0.0924 0.0033 96.43  
  0.0957 0.0033 96.55 96.30
Kreussler soil 1        
  0.0985 0.0014 98.58  
  0.0939 0.0006 99.36  
  0.1017 0.0006 99.41 99.12
Kreussler soil 2        
  0.0941 0.0011 98.83  
  0.0956 0.0007 99.27  
  0.0826 0.0003 99.64 99.25

Success Rating:

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

Conclusion:

All cleaners were effective in soil removal of stainless steel coupons using manual wipe method. The most effective cleaner was ChemFree SW4 at removal
efficiency of 98.54% and 102.06% on maintenance soil and production soil respectively. The least effective cleaner was Bio Circle CB100 ALU at 96.96% and
92.23% on maintenance soil and production soil respectively.

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