OLYCRAFT 6PCS Polypropylene Microcentrifuge Tube Rack, Double Panel 60-Well Centrifuge Test Tube Holder for Chemistry Laboratory - Assorted Colors

good for both 0.5 and 2.0 ml microcentrifuge vials, strongly recommended

Received the product as described

I was teaching PCR and gel electrophoresis to my AP Biology students and realized I didn’t have microcentrifuge tube holders. These were perfect and arrived very quickly.

PhD student here. These tube holders were nice quality, felt as good as the other ones we have in the lab. There are two sides that are useable, one for the regular 1.5mL Eppendorf tubes and the other for smaller tubes. I though that these were ok, offered more spacing between tubes so the tubes won't collide with each other. Unfortunately the height of each well is a bit low which made the regular 1.5mL tubes seem a little bit more unstable. Overall, good price for a lot of tube racks. Not sure if these are autoclave-able though. I wouldn't risk it.

These have held up well in cold and hot conditions. They been disinfected with ethanol, isopropanol and dilute bleach and show no signs of warping or discoloration or wear. They fit 1.5 tubes easily. The price point compared to Sigma or Fisher is exceptional - definitely get these instead! I do R&D for my job and these are perfect to use and work great.