Reddit reviews 50ml Centrifuge Tube, PP Material, Printed Graduation, Blue Cap, Skirted Conical Bottom, No-Leak, Non-Sterile, Karter Scientific 208J2 (Pack 50)
We found 8 Reddit comments about 50ml Centrifuge Tube, PP Material, Printed Graduation, Blue Cap, Skirted Conical Bottom, No-Leak, Non-Sterile, Karter Scientific 208J2 (Pack 50). Here are the top ones, ranked by their Reddit score.
Volume: 50mlStyle: Skirted BottomRCF Rating: 10000 x g95 kpa ApprovedNon-Sterile
Yeah dog...
These are the tubes I use
This is the rack I keep them in
Here's a post I wrote detailing how I slant yeast. The process is pretty simple, and only requires mason jars, test tubes, an innoculation loop, stove and pressure canner and a few consumables. I've tried several other methods for storing yeast, but this is by far the easiest, cheapest and most compact. You only need a pin prick's worth of yeast to create the slant, and you only have to maintain them every 1.5-2 years (which is also very simple). This makes it so you can accumulate quite the bank! I currently have a bank of 23 yeasts, and it fits in the size of a shoebox. The only thing I will note is that the test tubes in my blog can be expensive. I recently switched to these centrifuge tubes instead, as they are much, much cheaper, and they should work just fine, reading the comments, but I have not tested them personally yet, so have not updated my blog. The only downside to doing slants is it does take about 7 days to get a pitchable amount of yeast, so you have to be able to prepare ahead of time.
Cheap 50ml tubes and a rack for them.
They aren't pressure safe like the preforms are, so make sure you're all gassed off before you seal it for long term.
I usually keep it in a jar with the lid loose for a while before I decant and move the slurry over to a tube for longer term storage.
Right now I've got only six strains, but I only recently started harvesting from starters. My go-tos tend to be:
Second, though OP might prefer flat-bottom ones (https://www.amazon.com/Karter-Scientific-Centrifuge-30x115mm-Skirted/dp/B005Z4S2QU/ref=sr_1_9?s=industrial&ie=UTF8&qid=1484842696&sr=1-9&keywords=ml+conical).
I picked up a 500 mL flask for this reason. I overbuild a starter, decant off 1/3 or so into the 500 mL and add more wort to top it up to ~300 mL. I also top up the 2000mL flask to build up the pitching starter. Once the 500mL flask ferments out, I cool and decant off the liquid, and pour them into vials that I picked up on amazon.
https://smile.amazon.com/gp/product/B005Z4S2QU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
These work great.
You need to make some slants. Petris in the fridge dry up and end up with water matted on the surface.
check these out . I haven’t used they yet, and make sure you get a tray so you can PC them. I’ve used the glass ones, but those are really expensive.
Have you looked into something like these?