HANNA: Digital Refractometer for Propylene Glycol Analysis

The HI96832 is a rugged, portable digital refractometer designed for the measurement of percent volume and freezing point of propylene glycol based solutions. The HI96832 has a high accuracy of ±0.2% volume and ±0.5°C freezing point and features simple operation that gives reliable results each and every time. All readings are automatically compensated for temperature variations and displayed with a 1.5 second response time. The sealed flint glass prism and stainless steel well are easy to clean. Just wipe with a soft cloth in preparation for the next sample.

  • – Sample size as small as 2 metric drops (100 μl)
  • – Sealed stainless steel well with high-grade optical prism made of flint glass
  • – Quick, precise results are displayed in 1.5 seconds

The HI96832 Digital Refractometer utilizes the measurement of refractive index to determine the percent volume and freezing points of propylene glycol based solutions. Propylene glycol is used in glycol chillers and dispensing systems intended for food applications, such as beer and wine.

Maintaining the appropriate percent of glycol is important in glycol chillers as too low of a percentage could lead to the system freezing and rupturing while too much glycol will reduce the systems efficiency. The instrument converts the refractive index of a sample to percent volume or freezing point. These conversions are based on internationally recognized references for unit conversion and temperature compensation for glycol solutions (e.g. CRC Handbook of Chemistry and Physics, 87th Edition). The HI96832 is an easy-to-use tool for measuring freezing point and percent volume in propylene glycol solutions, on the production floor or in the lab.

  • – Designed for propylene glycol analysis
  • – Automatic Temperature Compensation
  • – 0 – 100% Volume range with ±0.3% accuracy
  • – 0 to -50 °C freezing point range with ±0.5 °C accuracy

One-point calibration

Calibrate with distilled or deionized water

Small sample size

Sample size can be as small as 2 metric drops (100 μl)

Automatic Temperature Compensation (ATC)

Samples automatically compensated for temperature variations

Dual-level LCD

The dual-level LCD displays measurement and temperature readings simultaneously

Stainless steel sample well

Easy to clean and corrosion-resistant

Battery indicators

Battery percent level remaining at startup and low battery indicator

Automatic shut-off

To conserve battery life the meter shuts off automatically after three minutes of non-use

Quick, accurate results

Readings are displayed in approximately 1.5 seconds

IP65 water resistant protection

Water resistant ABS plastic casing designed to perform under laboratory and field conditions.

Full Specifications

Servicing, Calibration and Support

Imbros’ local engineering department can service, repair and calibrate your instrument without expensive shipping costs or wait times.


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