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Radioactive source, ALPHA, Polonium 210, low energy, suitable for classroom use, for study in radioactivity and absorbers.
This source has a very short half-life of 135 days.
NOTE: About 18 months after purchase, the item is useless for experiments. Therefore, we normally do not carry stocks of this item. This must be ordered in from our supplier. Allow minimum 3-4 weeks for availability.
