That Becky is a beast.
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Exactly where I got the idea from
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Sheās got a fat ass cause itās refrigerated as well. But it fits the big jars 
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refrigerated is an important featureā¦especially with extended run times.
how well are you balancing your tubes? +/- 0.1gram has always been my go to for mid-speed (~10k rpm). havenāt hit 100k rpm in the last ten years (requires vacuuming chamber down to 50um to reduce friction).
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Tbh I havenāt got the weight fully balanced as I was too excited and wanted to see results right away. But @CuriousChemist22 is anal about balancing and Iāve seen him balance that thing to near perfection. I must say I did notice a more efficient separation when he balanced it that well
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you really should. reduces wear and tear, and catastrophic failures suck.
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He definitely taught me a few things about balancing and ramping up speeds slowly. The fuge he has allows the user to decide how the ramping goes digitally. On the Becky itās manual so itās easy to ramp up too fast and cause failure
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Okay now youāve got my interest peaked like a mferā¦ those are some hella fast speeds compared to what we have run so far. Do those speeds start to just crush the thca down? I always balance down to the variation of my scale which is +/- 0.2gā¦ so I zero them as far as it says.
When we go with larger amounts Iāll probably start trying to balance down to within +/- 0.05g because I like things to last, I figure it wears the ?rubber? stabilizing bushings down pretty fast.
Still trying to decide why to not use bagsā¦ was going to say I like that I can just tap them out, but I donāt really have a comparison. I think maybe the benefit will be the ability to leave behind the āwetā bottom layer more efficiently in a basket.
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I donāt think Iāve seen a rotor that can go that high on these fuges. The one you got is rated for 4K. The one I have is rated for 3.5k but the fuge says it can up to 8000rpm
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wasnāt running cannabinoidsā¦
running cesium chloride and/or sucrose gradients.
see: https://tools.thermofisher.com/content/sfs/brochures/D17309~.pdf
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That makes way more sense now lol
These are ālow rpmā centrifuge. They make āhigh rpmā ones as well. I think Iāve seen upwards of 25k rpm with heating and cooling capabilities.
Weāre still small fish in a big pond
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Really RCF is what matters, not rpmās. You need to take into consideration the diameter of your rotor.
example:
One of the centrifuge we have has a 15.6cm radius rotor, at 6krpm that gives you 6240 RCF.
That is alot of energy, if not properly balanced it can cause stress cracking in your rotor. In addition high speed rotors are only good for a certain # of hours before they need to be replaced. Please balance your load with care, and examine the rotor before use. With refrigerated centrifuges make sure to wipe up any ice/condensed h20 after your done and leave the lid open so it can dry. Ice/ water can cause major imbalance issues.
https://www.chem.purdue.edu/chemsafety/news-and-stories/CentrifugeDamages.html
there is a lot of energy in a centrifuge, treat it with respect.
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true. i was withing 1 gram of unbalance and it was noticeable. anything over would not let me ramp up without shaking the fuge. thankfully adding butane has allowed me to stay under 1k rpm
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Do you have a scale suitable to weigh the tubes /bottles before the run?
Remember to weigh the entire jar + sample when you do your weigh inās.
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Also weigh the centrifuge metal retainer capsules
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yes we use the same scales used to gram product. Everything is weighed including cup and lid
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Yeah, everything that is going to spin should be weighed together.
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