Trial #3
To evaluate longer cleaning time without rinsing
Four cleaners were selected from previous trial. Three aqueous based cleaners were diluted to 10% using DI water in 600 ml beakers. One semi-aqueous product was used at 50% diluted with DI water. All of the products were heated to 120 F on a hot plate.
Twelve preweighed aluminum coupons were coated with the second client supplied oil, Castrol Moly Dee Tapping Fluid. The oil was applied to coupons using a swab and then heated for 10 minutes using a Master Appliance heat gun. The coupons were allowed to cool to room temperature before weighing a second time.
Three coupons were cleaned in each solution for 10 minutes using stir-bar agitation. Coupons were not rinsed but were dried using air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.
Cleaning the soiled coupons for a longer time without rinsing was equal to the cleaning at five minutes with a rinse for all four products. The table lists the amount of soil initially added, the amount remaining after cleaning and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| 815 GD
|
0.2238
|
0.0618
|
72.39
|
|
|
0.5161
|
0.0770
|
85.08
|
|
|
0.8064
|
0.2130
|
73.59
|
| Metalnox M6314
|
1.0076
|
0.1547
|
84.65
|
|
|
0.8464
|
0.1180
|
86.06
|
|
|
0.9557
|
0.1098
|
88.51
|
| Hurrisafe 9450
|
0.7028
|
0.1164
|
83.44
|
|
|
0.7693
|
0.0831
|
89.20
|
|
|
0.8761
|
0.0455
|
94.81
|
| Bio T 300 B
|
0.7309
|
0.0061
|
99.17
|
|
|
0.7656
|
0.0104
|
98.64
|
|
|
0.7574
|
0.0099
|
98.69
|
| 815 GD
|
0.6043
|
0.0001
|
99.98
|
|
|
0.4247
|
-0.0001
|
100.02
|
|
|
0.5094
|
0.0001
|
99.98
|
| Metalnox M6314
|
0.5104
|
0.0273
|
94.65
|
|
|
0.5762
|
0.0126
|
97.81
|
|
|
0.6401
|
0.1132
|
82.32
|
| Hurrisafe 9450
|
0.6360
|
0.0155
|
97.56
|
|
|
0.8197
|
0.0051
|
99.38
|
|
|
0.5099
|
0.0075
|
98.53
|
| Bio T 300 B
|
0.6065
|
0.0031
|
99.49
|
|
|
0.5907
|
0.0065
|
98.90
|
|
|
0.4515
|
0.0071
|
98.43
|
These four products will be tested using ultrasonic cleaning with rinsing.
No relation