Food Safe GlycolFor Food & Beverage Processing

Hydratech manufacture several Coolflow products which are non-toxic, food safe and suitable for use in food and beverage cooling systems.

Since 2007 an increasing number of food and beverage processing companies have switched from various propylene glycol and brine based formulations to Coolflow DTX, a high performance glycol-hybrid.

Coolflow DTX is proven to improve cooling performance, reduce operating costs and facilitates smaller plant, whilst retaining a food safe classification.

For systems where Propylene Glycol is specified, Coolflow NTP and Coolflow USP are both HT1 certified.

Food Safe Glycol drums
Food Safe Glycol drums

Coolflow DTX Coolflow DTX

A ABAAA

High Efficiency Non Toxic Antifreeze and Secondary Refrigerant for process cooling & AC systems. Based on Ethylene Glycol blended with patented DeTox™ additive and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

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  • Summary - Rating: ASuitable for food & beverage process cooling and other applications where a non-toxic classification is preferred. High efficiency and more cost effective than MPG based coolants.

  • Efficiency - Rating: BHigh thermal conductivity and low viscosity at sub-zero temperatures, results in increased heat transfer efficiency and reduced energy demands.

  • Antifreeze - Rating: AProvides protection down to -50°C and lower concentration (% volume) is required to achieve the same freeze-point protection, when compared with NTP, USP, ECO2 and ECO3.

  • Corrosion Control - Rating: ALong-Life formulation with synergistic corrosion inhibitors to exceed BS6580 and ASTM D1384 standards. Also contains broad-spectrum biological inhibitors and polyacrylates to prevent scale precipitation.

  • Toxicity - Rating: AClassified as Non-Toxic and Food-Safe. Suitable for food & beverage processing systems and where low-toxicity is stipulated. LD50 Oral Rat >20,000mg/kg body weight.

  • Density:1.04 - 1.15 g/cm³ depending on inhibitors

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, slightly viscous liquid. It is mildly sweet to the taste and has a non-pungent but characteristic aroma

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Frost Protection °C

v/v of Coolflow DTX %

Refractive Index

-10

22.0

1.356

-15

28.0

1.362

-20

33.0

1.367

-25

38.0

1.372

-30

42.0

1.376

-35

46.0

1.380

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Coolflow NTP Coolflow NTP

B BCBAA

Non Toxic Antifreeze and Secondary Refrigerant for process cooling & AC systems. Based on Propylene Glycol and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

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  • Summary - Rating: BSuitable for food & beverage processing and other applications where a non-toxic classification is preferred. Average efficiency and relatively high cost per litre.

  • Efficiency - Rating: CAverage thermal conductivity and higher viscosity at sub-zero temperatures, results in reduced heat transfer efficiency and increased energy demands. Good Specific Heat capacity helps improve overall performance.

  • Antifreeze - Rating: BProvides protection down to -50°C but greater concentration (% volume) is required to achieve the same freeze-point protection, compared with DTX, IGE and LVF.

  • Corrosion Control - Rating: ALong-Life formulation with synergistic corrosion inhibitors to exceed BS6580 and ASTM D1384 standards. Also contains broad-spectrum biological inhibitors and polyacrylates to prevent scale precipitation.

  • Toxicity - Rating: AClassified as Non-Toxic and Food-Safe. Suitable for food & beverage processing systems and where low-toxicity is stipulated. LD50 Oral Rat >20,000mg/kg body weight.

  • Density:1.02 - 1.15 g/cm3 depending on inhibitors

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, slightly viscous liquid. It is mildly sweet to the taste and has a non-pungent but characteristic aroma.

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Frost Protection °C

v/v of Coolflow NTP %

Refractive Index

-10

25.0

1.356

-15

33.0

1.364

-20

39.0

1.370

-25

44.0

1.373

-30

48.0

1.380

-35

53.0

1.383

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Coolflow USP Coolflow USP

B BCBBA

Non Toxic Secondary Refrigerant Antifreeze, based on USP/EP Food Grade Propylene Glycol and FDA approved Corrosion & Biological Inhibitors.

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  • Summary - Rating: BSuitable for food & beverage processing and other applications where a pharmaceutical classification is preferred. Average efficiency and relatively high cost per litre.

  • Efficiency - Rating: CLow Thermal Conductivity and high Viscosity at sub-zero temperatures, results in reduced heat transfer efficiency and increased energy demands. Good Specific Heat capacity helps improve overall performance.

  • Antifreeze - Rating: BProvides protection down to -50°C but greater concentration (% volume) is required to achieve the same freeze-point protection, compared with DTX, IGE and LVF.

  • Corrosion Control - Rating: BPharmaceutical formulation with synergistic corrosion inhibitors to exceed BS6580 and ASTM D1384 standards. Also contains biological inhibitors and polyacrylates to prevent scale precipitation.

  • Toxicity - Rating: AClassified as Non-Toxic and Food-Safe. Suitable for food & beverage processing systems and where low-toxicity is preferred. LD50 Oral Rat >20,000mg/kg body weight.

  • Density:1.02 - 1.04 g/cm³

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, slightly viscous liquid. It is mildly sweet to the taste and has a non-pungent but characteristic aroma.

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Frost Protection °C

v/v of Coolflow USP %

Refractive Index

-10

25.0

1.356

-15

33.0

1.364

-20

39.0

1.370

-25

44.0

1.373

-30

48.0

1.380

-35

53.0

1.383

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Coolflow LVF Coolflow LVF

B BAACB

Very Low Viscosity, Non Toxic Antifreeze and Secondary Refrigerant for process cooling & AC systems. Based on Potassium Formate and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

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  • Summary - Rating: BExcellent heat transfer and pumping characteristics, low toxicity but can prove a challenge to eliminate corrosion in some systems.

  • Efficiency - Rating: AExcellent heat transfer and pumping characteristics places LVF at the top of the efficiency tree, for all water-based antifreeze solutions.

  • Antifreeze - Rating: ADepending on concentration can provide freeze protection down to -60°C.

  • Corrosion Control - Rating: CCorrosive when in contact with air and only recommend for certain metals and closed loop pressurised systems.

  • Toxicity - Rating: BLD50 (Oral Rat) of 7,000 to 20,000 mg/kg body weight depending on concentration in water. Not FDA approved as a food additive, but can be considered food-safe and widely used in food & beverage cooling systems.

  • Density:1.2 - 1.4 g/cm³

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, low viscosity liquid. It is salty to the taste and has a non-pungent but characteristic aroma.

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Coolflow LVF (strength)

Frost Protection °C

Dynamic Viscosity MPas (cP)

Thermal Conductivity (W/mk)

Refractive Index

LVF20

-20

1.8

0.56

1.365

LVF30

-30

1.9

0.53

1.374

LVF40

-40

2.2

0.52

1.380

LVF50

-50

2.6

0.5

1.387

LVF60

-60

2.9

0.48

1.392

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Coolflow ECO2 Coolflow ECO2

B BCBAA

Ecologically and Environmentally Friendly Non Toxic Antifreeze and Secondary Refrigerant for process cooling & AC systems. Based on Refined Vegetable Extracts and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

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  • Summary - Rating: BSuitable for systems where low environmental impact and ecological sustainability is preferred. Average efficiency but lower in cost compared with MPG based fluids.

  • Efficiency - Rating: CAverage thermal conductivity and high viscosity at sub-zero temperatures, results in reduced heat transfer efficiency and increased energy demands when compared with DTX, IGE and LVF.

  • Antifreeze - Rating: BProvides protection down to -50°C but more volume is required to achieve the same freeze-point protection compared with DTX, IGE and LVF.

  • Corrosion Control - Rating: ALong-Life formulation with synergistic corrosion inhibitors to exceed BS6580 and ASTM D1384 standards. Also contains broad-spectrum biological inhibitors and polyacrylates to prevent scale precipitation.

  • Toxicity - Rating: AClassified as Non-Toxic and Food-Safe. Suitable for food & beverage processing systems and where low-toxicity is stipulated. LD50 Oral Rat >20,000mg/kg body weight.

  • Density:1.02 - 1.26 g/cm³

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, slightly viscous liquid. It is slightly sweet to the taste and has a non-pungent but characteristic aroma.

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Frost Protection °C

v/v of Coolflow ECO2 %

Refractive Index

-10

25.0

1.355

-15

32.0

1.362

-20

38.0

1.367

-25

43.0

1.372

-30

48.0

1.377

-35

52.0

1.380

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Coolflow ECO3 Coolflow ECO3

B BCBAA

Ecologically and Environmentally Friendly Non Toxic Antifreeze and Secondary Refrigerant for process cooling & AC systems. Based on Bio-PG and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

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  • Summary - Rating: BSuitable for systems where low environmental impact and ecological sustainability is preferred. Slightly more efficient than ECO2 but more expensive per litre.

  • Efficiency - Rating: CLow Thermal Conductivity and high Viscosity at sub-zero temperatures, results in reduced heat transfer efficiency and increased energy demands.

  • Antifreeze - Rating: BProvides protection down to -50°C but more volume is required to achieve the same freeze-point protection compared with DTX, IGE and LVF.

  • Corrosion Control - Rating: ALong-Life formulation with synergistic corrosion inhibitors to exceed BS6580 and ASTM D1384 standards. Also contains broad-spectrum biological inhibitors and polyacrylates to prevent scale precipitation.

  • Toxicity - Rating: AClassified as Non-Toxic and Food-Safe. Suitable for food & beverage processing systems and where low-toxicity is stipulated. LD50 Oral Rat >20,000mg/kg body weight.

  • Density:1.02 - 1.26 g/cm³

  • pH:7.5 - 9.0 depending on inhibitors

  • Boiling Point:>100°C

  • Characteristics:a clear, slightly viscous liquid. It is slightly sweet to the taste and has a non-pungent but characteristic aroma.

  • Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

Frost Protection °C

v/v of Coolflow ECO3 %

Refractive Index

-10

25.0

1.363

-15

32.0

1.372

-20

38.0

1.378

-25

43.0

1.384

-30

48.0

1.389

-35

52.0

1.394

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