Glycol

Parameter Selection

Application Importance of Glycol in Brewing

While not a part of the beer making process, proper refrigeration, both storage and serving temperature, is vital to a good finished product. The proper temperature for storing and serving beer is 38°F, be it domestic or import, pasteurized or not. Beer that is too warm will cause excessive foaming, while beer kept too cold doesn’t release enough carbonation and remains flat. Either way, improper temperature results in poor quality and loss of profits.

Beer cooling systems implement a separate chiller that uses the power of glycol to move beer further distances. Glycol is mixed with water to create a chilled mixture that is pumped from the glycol power pack or power packing system through the cooling lines that run parallel to the beer system lines. Both lines are kept cold by the internal moisture barrier in the trunk line and foil wrap nearby each glycol line. For a successful system, you need a 35% glycol, 65% water solution to prevent the pipes from freezing/busting or not cooling efficiently enough.

There are 2 main types of glycol used in refrigeration. Solutions composed of both ethylene glycol and propylene glycol will effectively lower the freezing point of water and for most applications can be used interchangeably or even as a mixture of the two. While they share similar chemical forms, propylene glycol is significantly less toxic and is favored over ethylene glycol in applications where human exposure can occur.

Meters

Digital Refractometers

Digital Refractometers offer a simple way to measure the percent volume and freezing point of glycol based solutions in refrigeration. Calibration is simple using only a drop of deionized water. Then a small amount of wort is placed on a sealed prism and a temperature compensated measurement is then provided.

  • Sample sizes as small as 100 μl
  • Fast automatic temperature compensation measurements
  • High accuracy: ±0.2% volume and ±0.5 °C freezing point
  • Digital readout: little room for user error or subjectivity
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Digital Refractometers

Digital Refractometers offer a simple way to measure the percent volume and freezing point of glycol based solutions in refrigeration. Calibration is simple using only a drop of deionized water. Then a small amount of wort is placed on a sealed prism and a temperature compensated measurement is then provided.

  • Sample sizes as small as 100 μl
  • Fast automatic temperature compensation measurements
  • High accuracy: ±0.2% volume and ±0.5 °C freezing point
  • Digital readout: little room for user error or subjectivity
Shop Now >

Accessories

Glycol Accessories & Lab Supplies

Hanna Instruments provides you with everything you need for accurate and simple measurement using a refractometer. Refractometry accessories include:

  • Microfiber cloths to wipe down optical prism
  • Alcohol based cleaning solution for cleaning
Shop Now >

Glycol Accessories & Lab Supplies

Hanna Instruments provides you with everything you need for accurate and simple measurement using a refractometer. Refractometry accessories include:

  • Microfiber cloths to wipe down optical prism
  • Alcohol based cleaning solution for cleaning
Shop Now >