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Trial Number 5

Trial Purpose:

To evaluate compatibility of top cleaning alternatives with the tin metal strips used in the manufacture of solar cells.

Date Run:

04/03/2008

Experiment Procedure:

Equal length strips of the supplied tin wire were cut to placed in a 10 ml glass vial containing full strength products at room temperatures. Each strip was weighed to establish a baseline weight. Strips were immersed in a solution for 24 hours. The pieces were then removed and wiped to remove any residual cleaning product. Final weights were measured and weight loss was determined. Observations were made during the 24  hour period.

Trial Results:

During the compatibility test, no visual signs of damage were noted for any of the four products. Only one product, DS 144, had a weight change greater than 0.1%. One product, Ionox HC 2, had a slight increase in weight. Initial weights, final weights, weight change and percent change are listed in the table below.

Product Initial Wt Final Wt Change % Change
SC Actisolv 0.0981 0.0980 0.0001 0.10
Ionox HC 2 0.1058 0.1059 -0.0001 -0.09
DS 144 0.0970 0.0966 0.0004 0.41
IPA 0.0904 0.0903 0.0001 0.11

Success Rating:

A cleanliness study, addressing only various analytical techniques.

Conclusion:

No significant change in weight was noted for any of the four products over a 24 hour period of immersion.

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