I’m looking for a 20L rotovap that I can acquire here in the states for a good price. it can be used, I would like to be able to pay cash for it, I’m in Northern California. anybody got any leads for me?
I’m currently trying to decide between a 5l rotovap in 110 or 220. Anyone have experience with 110v models? Would it be worth it to just pony up the cash to run another 220v outlet?
220v plug could come in handy for other things. I’m wiring my lab now with lots of 220 single phase 15 to 50 amp plugs. 220 is nice if you want to run certain gauge wire
What’s the price
If you can do 220 I would always recommend it you will Pull less amps
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Asking $300/ea, will discount the more you buy. Put a listing up here with details: 6x Water aspirators for 50L rotos in Denver area
still on sale?
Hook up the aspirator to a hydro pump and it will keep the water nice and cold and pull a decent vacuum. They only phll so deep anyway so if the water gets hot the vac gets way worse
Thanks for the tip about the water aspirator, I’m actually selling my 5l rotovap tomorrow but I’ll let the guy know.
I’m personally using a diaphragm pump now with my new 50l rotovap and it’s been much simpler.
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Yea i only use that for a 5 l mt 20 has a dual head on it, i spent alot of rime swapping frozen water bottles before i hooked up the water pump. It’s actually a lytron water chiller u can get them from ebay for around 100 keeeps the water at 5c all day
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Do tou have a link to the chiller
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The cheap 100.00 chiller version. I have a recirculating heater/chiller already. Looki g for something vs my tap every rotovap run. I do use the run off to fill my 55gal water holding tanknfor my plants, so its not going to waste
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Anyone have advice on how to correct this wobble I’m having with a RE-501 rotovap?
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Remount the 5l flask, and remount, and remount. A few tries may may the wobble less. Mine wobbles, a bit. I have to pay attention to the water level height
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My buchi wobbles but then again it’s the Chinese boiling flask that’s wobbling
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Ahhh, makes sense with the buoyancy helping to balance it. I did notice it likes to work itself loose as well. Do you just hand tighten the evaporating flask, or use a strap wrench like I’ve seen mentioned here?
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Hand tighten quite a bit. Then i retighten after warm up
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If its loosening up on ya, try using ptfe tape on the threads, then tighten up. The ptfe should help heelp it tighteded up.
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Hey Guys I wanted to give you an update on the Chinese Roto Situation. I ended up getting a touch science 50 litre with 1 size larger chiller than Touch recommended. Its been running now for a bit and I have to say that its been all good. Merlin from touch science was really good too. I would recommend going with them.
Hope this helps someone else on their quest.
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