Marcus L. Rowland (ffutures) wrote,
Marcus L. Rowland

Paper discs?

Something I regularly need is absorbent paper discs for bacteriology experiments. We usually make them by punching holes in filter paper, but most hole punches are 6mm, we could really do with something a little bigger, e.g. 10mm.

Looking on eBay, all of the paper punches on offer seem to be complicated shapes or 15mm or bigger circles, which is too big for our needs. Anyone know of a source for 10mm punch? Preferably not the ones you hit with a hammer though, they usually damage the discs.
Tags: science

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