I have a -80C chiller (https://intecusa.com/shop/ols/products/60l-80c-ultra-low-recirculating-hermetic-chiller) for my cls and am trying to avoid the use of ethanol as the chiller fluid. Thanks!
Duratherm fg is food grade. Duratherm s is also good
Oh yeah you’re talking chiller, we used duratherm fg and s in our rotovap baths. Not sure for chilling