0.5 mL tube to 1.5 mL tube adapter

by WaveSupportApparatus, published

0.5 mL tube to 1.5 mL tube adapter by WaveSupportApparatus Jun 16, 2016
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493Views 53Downloads Found in Biology


This is an adapter that lets you insert a 0.5 mL tube into a space meant for a 1.5 mL tube. The tab is exactly the size of a closed 1.5 mL tube, and it has a chamfer that your fingernail fits into so that it is easy to remove the adapter from a machine. The bottom of the tube is exposed so that you can push it out if it gets stuck inside.

The usual way to centrifuge a 0.5 mL tube is to nest it inside a 1.5 tube, but I often had catastrophic failures when centrifuging samples for long periods at high speeds; the 0.5 tube would twist inside the larger tube, its rim would get wedged, and then it (and the tube's cap) would rip off entirely. This adapter prevents this by giving more support to the 0.5 tube's rim. I have successfully tested this in PLA, spinning full tubes at 15,000 RPM (around 21,100 RCF) for 10 minutes at a time without damage to the tubes or delamination of the adapters.

You should test your own tubes and prints to make sure that they can withstand centrifugation at the forces, periods, and temperatures you need, before you risk samples.

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LOL. Just found this. Thanks!

This is great! I've had the same idea for our micro size Eppendorf tubes, but I never got around to designing the adapter. We only have centrifuges for larger tubes, and I wasn't sure this would work. Now I know that it does. Thanks!