NSF Food-Grade 30% Premix

NSF HT1 registered food-grade inhibited propylene glycol heat transfer fluid, premixed at 30% concentration. This is the highest-performing premix we stock in thermal terms — the lower the glycol fraction, the closer the fluid behaves to water, and the less capacity you give up at the heat exchanger.

Freeze protection to −4°F. Burst protection extends meaningfully below that figure: propylene glycol solutions form a pumpable slush as they cool rather than a solid block, so pipework survives well past the stated freeze point. Full concentration-versus-temperature data is in the technical reference charts.

A 30% charge suits indoor and mild-climate food-processing loops where the fluid never sees a hard freeze, and systems where you need to claw back chiller capacity. Note that 30% is generally regarded as the practical floor for corrosion inhibitor performance — diluting below it compromises the inhibitor package as well as the freeze point.

Shipped factory-premixed with deionised water, so there is no blending on site and no risk of diluting with hard water. Mixing concentrate with high-mineral tap water is the most common cause of premature inhibitor depletion and scale in glycol loops.

Dyed pink for leak detection. The colour is a safety feature, not cosmetic — it lets you trace a weeping fitting or a failing heat exchanger before the loss shows up as a pressure drop. Why heat transfer fluids are dyed.

Typical applications

• Indoor food and beverage process cooling
• Mild-climate and southern-region chilled-water loops
• Systems where heat transfer capacity is the binding constraint
• Dairy and beverage cooling with no outdoor exposure

Certifications & documentation

• NSF registered HT1 — approved for use in food-processing areas where incidental food contact is possible
• Propylene glycol is listed by the FDA as Generally Recognized As Safe (GRAS) under 21 CFR 184.1666
• Certificate of Analysis (COA) and Safety Data Sheet (SDS) supplied with every shipment

Not sure which concentration your climate needs? See the PG dilution guide by climate zone.

Available pack sizes

• 55-gallon drum — part no. 06373DR55
• 275-gallon tote (IBC) — part no. 06373TOTE

Need a full truckload, a repeating supply contract, or a concentration we do not stock? Request a bulk quote and we will price it.