All 3 products are: NSF HT-1 Approved for incidental contact. Multitherm PG-1 & Multitherm IG-4 are Kosher Certified
Multitherm PG-1 - Self cleaning, Non Fouling, High quality food grade mineral oil for use in closed loop, liquid phase heating and cooling systems to 600ºF.
FDA Certified Non-Toxic USDA Chemically Acceptable
Multitherm IG-4 - is a non-toxic durable heat transfer oil for use in closed loop, liquid phase heating systems up toto 600ºF. It has very low vapor pressure a dn oxidation resistance.
Multitherm FF-1 - Flushing Fluid up to 600ºF.