Chinese Rotovap


#21

I’ve never tried dry ice and water. I thought that would cause tons of boiling? Very true it doesn’t work so wonderful like a rotovap but when you got no money sometimes that’s the only option .


#22

A 120.00 tabletop alcohol distiller will work just fine for personal home use. Its been discussed greatly the last week.


#23

I’ve done it with only one condenser and a cold trap . Works flawless besides the time it takes


#24

If you got spare glass and creative mind . You could build your own rotovap using this motor and a home made built stand. With a pancake Griddle and a pan of water . For maybe same price as the table top but all work great


#25

I was wondering about touchscience I tried to buy a couple rotos from him this summer and the routing got flagged and pulled back last minute saying it was a scam and not even an existing bank. Anyone have luck with touchscience ben that can verify before I purchase a few rotos from him.


#26

I had great luck with chinese roto on dhgate


#27

Boiling… You mean splashing from the dry ice and salt water? Yeah there’s a bit of back splash which is why I keep my area covered so it doesn’t splatter all over everything. The one thing I’ve come to realize over time is use a 5Gal bucket and don’t fill it all the way up and ratio the dry ice intake so that a shit ton of water doesn’t fly everywhere or start over flowing out of the bucket. A towel over the bucket helps reduce splashing and as for “circulation” I legit just stir the water bath with a straining spoon.


#28


#29

Is that a dry mantle I see?


#30

I don’t use my water bath because it doesn’t start on for mote that 28 seconds and then knocks out my power, so I needed a low power option. I’m actually trying to sell my 5L water bath that came with the rotovap.


#31

Stay*


#32

There legit I’ve ordered from them and so have a lot of other people I know m, never had a oeoblem with there stuff. Sometimes the international wires get flagged if they want a better description of the item or etc: either way there a good company


#33

Why don’t you use this and a bucket of water . Same price as that mantle and a lot more accurate and can have the flask spinning and slashing in the water having fun. One of the best tools I’ve ever came across . I’ve used for distilling, roto, purger, recovery of closed loop, even to cook and it’s like magic.


#34

sounds like you have an electrical short, or you have too maney things that you are running on that circuit.


#35

Dm me a $
I like to have back-up spare parts.


#36

Thank you concentrated_hombold for the confirmation


#37

Has anyone here had experience with the Lab1st rotovaps?


#38

I put in an order with Merlin from touch science so we will see how that goes.

Does anyone have a cheap way of automatically regulating the vacuum pressure so that it has stable evaporation without having to manually keep adjusting it?


#39

How much are those 5l units from them


#40

Not sure, I just got quote on the 50L