You can find solutions out there on smaller sized glycol chillers, with internal h2o tank, for ease of use. H2o may be used to chill down to 7°C but then glycol have to be additional to chill further. All our chiller units can be used as small temperature chillers, so https://crossbookmark.com/story20095308/5-simple-statements-about-glycol-chiller-industrial-explained