Use of Lawler's aluminum dry heat baths have become increasingly popular in those laboratories analyzing Thermal Oxidation Stability per ASTM methods D943, D2274 and D2893.
In addition to removing the safety hazards involved with hot oil baths, it is also equipped with an over temperature safety limit.
Configured with 12 testing ports with individual flowmeters and digital temperature control, Lawler's Model 30 Dry Block Bath is an excellent alternative for your TOST requirements.