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.
Trial Results:
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
Success Rating:
A follow up test, usually based on company input.
Conclusion:
These four products will be tested using ultrasonic cleaning with rinsing.
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