Four small glass vials with black caps and white labels. The vials are arranged in a row with one vial on the left side one in the middle and one on the right side. Each vial has a label with the words "Reference Star" written on it. The label also mentions that the vials contain a substance called "Zinc sulfate". The vial is filled with a clear liquid and there is a small dropper at the bottom of the image. The background is black.
Description 
Type
Category
-
Date
2016
Collection
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