To evaluate additional products that were more closely comparable to the past solvent used for cleaning.
Date Run:
01/30/2008
Experiment Procedure:
An additional four products were selected based on similarity to the preferred past solvent according to client supplied information. All four products were used at full strength in 250 ml beakers at room temperature.
Twelve preweighed coupons were coated with Hangsterfer Laboratories Hard Cut 5418 cutting fluid using a handheld swab. The contaminated coupons were weighed a second time to determine the amount of soil added. Three coupons were immersed into each cleaning solution and manual raised and lowered in the cleaning solution to provide minimal mechanical agitation. After one minute of cleaning, the coupons were removed and dried for 30 seconds using compressed air at room temperature. Following air drying, the coupons were weighed a final time to determine the amount of soil remaining. Efficiency for each coupon was determined and average cleaning results for each product were calculated.
Trial Results:
Two of the four products removed over 80% of the cutting fluid within one minute of mechanical agitation. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Shopmaster RC
0.1026
0.0224
78.17
0.1710
0.0230
86.55
0.1955
0.0261
86.65
DBE 6
0.1027
0.0408
60.27
0.1479
0.0325
78.03
0.0633
0.0294
53.55
Soy Clear 1500
0.2080
0.0157
92.45
0.1252
0.0320
74.44
0.1324
0.0231
82.55
Methyl Ester 1618
0.1522
0.0371
75.62
0.1105
0.0330
70.14
0.1572
0.0332
78.88
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The two effective products, Shopmaster RC and Soy Clear 1500, will be included with the four effective products from the previous trial to determine how well they work on the second supplied soil.
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