Reddit reviews EarthOx Sterile Centrifuge Tubes with Flat Caps 50ml (RCF 12000xg)(DNase/RNase Free) (25 Tubes)
We found 2 Reddit comments about EarthOx Sterile Centrifuge Tubes with Flat Caps 50ml (RCF 12000xg)(DNase/RNase Free) (25 Tubes). Here are the top ones, ranked by their Reddit score.
50 ml Conical Polypropylene tubes with Flat capsDNase/RNase Free, SterileEasy-to-read black graduations are accurate to ±2%, 2.5ml incrementsRCF up to 12,000xgAutoclavable at 121℃ and freezable to -80℃
[https://www.amazon.com/gp/product/B0141JSL4C/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1](I use these) combined with regular sample vials from Goulet. When I want to use the ink, I either find a way to stand the centrifuge tube up (cuz they have pointed bottoms - I really need to make something to hold them steady) or use a syringe to transfer a few mL to a sample vial. Works great.
They are polypropylene and thus autoclavable so they should withstand repeated sterilizations but I haven't tested that personally, I doubt the markings are gonna last. They are fine after a couple runs, tho. I personally prefer the skirted ones so they stand on their own, but they have one's without. One of the reviews for what I originally linked is even from someone using them for reishi and oyster slants.
Amazon has a couple good options, like these come sterile and are polypropylene and so reusable, as well. It's nice not having to work with tiny tubes.