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Trial Number 1

Trial Purpose:

To evaluate cleaners effectiveness at removing flux on graphite fixtures.

Date Run:

01/05/2020

Experiment Procedure:

Pre-contaminated graphite fixtures were provided by the company. Each of the four cells on one fixture was rated based on how contaminated they were initially and rated again after drying. The following visual rating keys were used:

Initial Visual Rating Key

# Description
1 No contamination
2 Minimal contamination
3 Partially contaminated
4 Mostly contaminated
5 Completely contaminated

Clean Visual Rating Key

# Description
1 Completely removed
2 Mostly removed
3 Partially removed
4 Minimal removal
5 No removal

One fixture was immersed either heated or unheated based on vendor recommendations and dilutions for fifteen minutes. Fixtures with more than 0.5 difference in rating was considered effective and would be tested further to improve effectiveness.

 

Trial Results:

 

Cleaner Initial Rating Clean Rating Average Initial Rating Average Clean Rating Difference
1 3.5 3 4.3 3.8 0.5
3.5 3
5 4.5
5 4.5
2 3.5 3 3.8 3.0 0.8
3.5 3
4.5 3
3.5 3
3 4 4 4.1 4.1 0.0
4 4
4.5 4.5
4 4
4 5 4 5.0 4.0 1.0
5 4
5 4
5 4
5 4.5 4 4.5 4.0 0.5
4.5 4
4.5 4
4.5 4
6 4.5 3 4.5 3.0 1.5
4.5 3
4.5 3
4.5 3
7 5 4.5 5.0 4.5 0.5
5 4.5
5 4.5
5 4.5
8 5 4.5 5.0 4.5 0.5
5 4.5
5 4.5
5 4.5
9 5 5 5.0 4.9 0.1
5 5
5 5
5 4.5
10 3.5 3 3.1 2.6 0.5
3 2.5
3 2.5
3 2.5

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Aquavantage 1400GD, Sta-Sol ESS 160, and SC MaxiSolv (unheated) were considered the most effective out of the cleaners at removing flux from graphite fixtures. SC MaxiSolv heated will be run again to confirm the results during the next round of testing. The next step will be to increase the concentration of Aquavantage 1400 GD based on vendor recommendations and there will be an increase in temperature for Sta-Sol ESS 160.

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