We build our own using a Grainger Dayton hot water recirculation pump.
been using this heater with this temp controller and circulating with an ecoplus 1110. takes about ~30 minutes to heat a 12 gallon cooler to ~100f from ~70f. Might not be strong enough for columns but it is more than enough for a jacketed collection pot.
What exactly is that?
That's what I've been using but it's incredibly dangerous.
ive been using a polyscience water recirculator. it heats up super quick, it was a few hundred $ but ive been using it about 6 months now with zero problems.
umm could you elaborate on that... The water heater has a safety cradle for the heating element and the temp controller is rated for enough power to run the heater. I even pump through the walls to ensure there is minimal electrical devices in my work space.
https://xtractordepot.com/products/polyscience-lx-immersion-circulator-maximum-temperature-98-cWhich model do you like?
It's a raw heating element dipped in water, if the temp sensor slips out of the water it can overheat. If it's left on the water boils off and it lights on fire. (. I know from experience)
been using this heater with this temp controller and circulating with an ecoplus 1110. takes about ~30 minutes to heat a 12 gallon cooler to ~100f from ~70f. Might not be strong enough for columns but it is more than enough for a jacketed collection pot.
It's a raw heating element dipped in water, if the temp sensor slips out of the water it can overheat. If it's left on the water boils off and it lights on fire. (. I know from experience)
I guess those are valid concerns but mine sits in a cooler with a lid so it could never slip out of the water and I suppose the the temp controller could malfunction but so could any hardware. I still consider the setup to be safe if used properly.