User:Michael S. Bible/Notebook/581/2014/10/01
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Today we conducted a diffusion test using a PVA film.
The thickness of the film was measured using a Promas Sylvae System. The measures were taken on the negative portion of the film after the film was cut to size to fit the diffusion tube. Three measurements were taken resulting in 0.52mm, 0.55mm, and 0.58mm. The film thickness was calculated using the average of the measurements. The film thickness is 0.55mm. The film mass was also recorded weighing 0.2350g.
Table 1. Shows the times of when the UV vis measurements were taken from each side of the diffusion tube. The undiluted portions of each solution was returned back to the chamber. It is important to note that the 15 minute measurement was taken before the 5 minute aliquots could be returned; and the aliquots of the 15 minutes were not returned at all.
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