Trial #1
To evaluate additional products that were more closely comparable to the past solvent used for cleaning.
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.
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
|
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.
No relation