Ackers BORO3.3 Science 500Pcs 1.5ml Polypropylene Graduated Microcentrifuge Tubes with Snap Cap,Natural

These are awesome little leak-free liquid storage holders. I use them for adding essential oils to the simmer pouches I create. They are also great for flavor enhancing—like adding a few drops of syrup or extract to something you're gifting. These are awesome and you get a lot inexpensively.

Los tubos no son de la calidad de axygen, pero se pueden utilizar para protocolos dónde no se necesite incubar a -20 °C

Más del ochenta por ciento de las tapas están a la mitad, los tubos están defectuosos.

Quick deliver, just what I ordered

We lost dozens of critical samples due to structural failure of these 1.5-mL polypropylene (natural) microcentrifuge tubes from Ackers Science. We ended up transferring the rest of our samples to another style of tube because we couldn't risk losing more samples. Looking at the tubes now, they are very malleable and clearly very thin-walled; the walls can be completely collapsed with very mild pressure (see attached image - and I encourage you to try doing this with quality tubes to appreciate how incredibly thin a tube has to be to deform like this). These are absolutely not suitable for centrifugation. They might be useable for other things (e.g., simple reagent prep, room-temperature aliquotting/storage), but these are the cheapest tubes you can buy in every possible way. Do not trust your critical samples to these tubes!!!