NobleMetalWorks
Well-known member
I have two heating collars, they are not cheap and I need more.
I figured out an alternative to a glas col that works very well, and is very inexpensive.
This will only work for smaller sized round bottom flasks, but can be used as hot water baths or heating for beakers as well, it works perfectly with 5L round bottom flasks. I now have several of these set up and they have been working perfectly for over 3 months.
I picked up several slow cookers or crock pots from goodwill, salvation army, etc. I put several inches of water in the bottom, then put my reaction vessel inside. For 5L flasks, they fit almost as if they were made for this. Choose the heat setting, there is only high or low but the water insures that it will never get too hot.
If you are using this method with AR and not a closed system, then you should do this under a hood or outside, also be aware that the NOx will corrode everything it comes into contact with that is metal, including any metal on the crock pot. I am using condensers connected to a fume scrubber, an enclosed system, so I don't have to worry about the gases created. You will have to figure out a way to deal with the NOx gas given off. But other than that, it works very very well.
Scott
I figured out an alternative to a glas col that works very well, and is very inexpensive.
This will only work for smaller sized round bottom flasks, but can be used as hot water baths or heating for beakers as well, it works perfectly with 5L round bottom flasks. I now have several of these set up and they have been working perfectly for over 3 months.
I picked up several slow cookers or crock pots from goodwill, salvation army, etc. I put several inches of water in the bottom, then put my reaction vessel inside. For 5L flasks, they fit almost as if they were made for this. Choose the heat setting, there is only high or low but the water insures that it will never get too hot.
If you are using this method with AR and not a closed system, then you should do this under a hood or outside, also be aware that the NOx will corrode everything it comes into contact with that is metal, including any metal on the crock pot. I am using condensers connected to a fume scrubber, an enclosed system, so I don't have to worry about the gases created. You will have to figure out a way to deal with the NOx gas given off. But other than that, it works very very well.
Scott
