Trial #5
To evaluate effective alternatives on the sixth supplied contaminant.
Five products from the previous trial were selected and used at full strength based on past performances. The cleaning solutions were all heated to 130 F on a hot plate.
Fifteen preweighed alloy coupons were coated with the sixth contaminant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded, and efficiencies were calculated for each coupon cleaned.
All five products removed over 92% of the lubricant. Three removed over 95% and one of these (DS 108) removed over 97%. 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
|
| Soy Gold 1100
|
0.6604
|
0.0227
|
96.56
|
|
|
0.7529
|
0.0258
|
96.57
|
|
|
0.4799
|
0.0346
|
92.79
|
| Solsafe 245
|
0.4885
|
0.0197
|
95.97
|
|
|
0.5469
|
0.0269
|
95.08
|
|
|
0.5791
|
0.0279
|
95.18
|
| Shopmaster RC
|
0.4321
|
0.0467
|
89.19
|
|
|
1.4430
|
0.0325
|
97.75
|
|
|
0.4722
|
0.0505
|
89.31
|
| DS 108
|
0.4749
|
0.0130
|
97.26
|
|
|
0.4202
|
0.0135
|
96.79
|
|
|
0.6765
|
0.0140
|
97.93
|
| D Greeze 500 LO
|
0.3274
|
0.0223
|
93.19
|
|
|
0.4527
|
0.0240
|
94.70
|
|
|
0.4694
|
0.0234
|
95.01
|
The five products should be retested on the fourth and fifth contaminants with modified operating conditions to improve cleaning efficiency.
No relation