To find replacement cleaners for third contaminant
Date Run:
08/06/2002
Experiment Procedure:
Five products were selected from the laboratory's database of product testing based on client supplied information. Two additional products were selected from the previous trials. Five of the seven products were used at full strength and the other two were diluted to 10% using DI water. All seven products were degassed for 5 minutes in a Crest 40 kHz ultrasonic tank at room temperature. Twenty-one preweighed coupons were coated with Emerson & Cuming Eccobons Solder 59C (7440-22-4, 108-88-3, Silicone Resin) using a hand held swab. Coupons were sat for 2 hours and were reweighed. Three coupons were cleaned in each solution for 5 minutes using the ultrasonic energy. Coupons were rinsed for 15 seconds in tap water at room temperature and dried using air knives also at room temperature. Final weights were recorded and efficiencies were calculated.
Trial Results:
Four of the products tested, both the Bio Chem System and Dynamold products, were very successful in removing nearly all of the coating from the coupons. The table below lists the efficiencies for each coupon cleaned.
Cleaner
Initial wt of cont.
Final wt of cont.
%Cont Removed
Bio T Max
0.5124
0.0105
97.95
0.3544
0.0035
99.01
0.3366
0.0029
99.14
SolSafe 245
0.1616
0.0029
98.21
0.365
0.0259
92.90
0.1155
0.0033
97.14
DS 104
0.4898
0.0320
93.47
0.1052
-0.0002
100.19
0.1727
-0.0008
100.46
DS 108
0.1353
-0.0001
100.07
0.1804
-0.0003
100.17
0.2117
0.0364
82.81
Natural Solutions
0.3496
0.3250
7.04
0.4885
0.4861
0.49
0.4698
0.4732
-0.72
DBE
0.2742
0.2565
6.46
0.3990
0.3937
1.33
0.1793
0.1736
3.18
Armakleen E 2001
0.5053
0.4996
1.13
0.3839
0.3718
3.15
0.1176
0.1055
10.29
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 four successful cleaners will be used to clean the next contaminant under similar conditions.
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