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HI96811 Digital Refractometer for Sugar (% Brix) Analysis in Wine, Must and Juice

HI96811 Digital Refractometer for Sugar (% Brix) Analysis in Wine, Must and Juice

The HI96811 is a rugged, portable digital refractometer designed for sugar measurement of wine, juice and must. The HI96811 reports sugar content as % Brix and has a high accuracy of ±0.2%. The operation of the meter is simplified with only two buttons: one button is to calibrate with distilled or deionized water and the other to take a measurement. All readings are automatically compensated for temperature variations according to the ICUMSA Methods Book standard 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.

The HI96811 is a rugged, portable digital refractometer designed for sugar measurement of wine, juice and must. The HI96811 reports sugar content as % Brix and has a high accuracy of ±0.2%. The operation of the meter is simplified with only two buttons: one button is to calibrate with distilled or deionized water and the other to take a measurement. All readings are automatically compensated for temperature variations according to the ICUMSA Methods Book standard 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)

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

 

 

 

 

Sealed stainless steel well with high grade optical prism made of flint glass

Sealed stainless steel well with high grade optical prism made of flint glass

 

 

 

 

Fast 1.5 second response time for temperature compensated reading

Fast 1.5 second response time for temperature compensated readings

 

 

Details

The HI96811 portable refractometer converts the refractive index of a wine, juice or must sample to % Brix. This conversion is based on the tables found in the ICUMSA Methods Book (International Commission for Uniform Methods of Sugar Analysis) that documents the changes in refractive index with temperature for a percent by weight sucrose solution. Since the majority of sugar in grape juice and must is fructose and glucose instead of sucrose, the reading is sometimes referred to as “Apparent Brix”. Typical grapes at harvest will be between 29-35% Brix or degrees Brix (°Bx). The HI96811 is an easy to use tool for winemakers for measuring sugar in grapes or must, in the field or in the lab.

  • Designed for wine sugar analysis
  • Temperature Compensation algorithms based on sucrose solution
  • 0 to 50% Brix range with an accuracy of +/- 0.2% Brix

Making a Standard % Sucrose Solution

To make a Sucrose Solution, follow the procedure below:

  • Place container (such as a glass vial or dropper bottle that has a cover) on an analytical balance.
  • Tare the balance.
  • Weigh out X grams of high purity sucrose (CAS #: 57-50-1) directly into a beaker
  • Add distilled or deionized water to the beaker so the total weight of the solution is 100g.
  • Note: Solutions above 65% may need to be vigorously stirred or shaken and heated in a water bath to roughly 40°C (104°F). Remove solution when sucrose has dissolved and allow to cool before use.

Example to prepare as 25% sucrose solution:

Sucrose (g) Water (g) Total (g)
25.000 75.000 100.000
refractive index

Refractive Index

The HI96811 takes measurements based on a sample’s refractive index. Refractive index is a measurement of how light behaves as it passes through the sample. Depending on the sample’s composition, light will refract and reflect differently. By measuring this activity with a linear image sensor, the sample’s refractive index can be assessed and used to determine its physical properties such as concentration and density. In addition to the linear image sensor, the HI96811 uses an LED light, prism and lens to make measurement possible.

Variations in temperature will affect the accuracy of refractometry readings, so the use of temperature compensation is highly recommended for reliable results. The HI96811 contains a built-in temperature sensor and is programmed with temperature compensation algorithms in accordance with the ICUMSA Methods Book Standard for a percent by weight sucrose solution.

 

Features at-a-glance:

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

Quick, accurate results

  • Readings are displayed in approximately 1.5 seconds

Dual-level LCD

  • The dual-level LCD displays % Brix and temperature readings simultaneously

Specifications

Specifications 
Sugar Content Range0 to 50% Brix
Sugar Content Resolution0.1% Brix
Sugar Content Accuracy (@25C/77F)0.2% Brix
Temperature Range0 to 80C (32 to 176F)
Temperature Resolution0.1C (0.1F)
Temperature Accuracy0.3 C (0.5 F)
Temperature Compensationautomatic between 10 and 40C (50 to 104F)
Measurement Timeapproximately 1.5 seconds
Minimum Sample Volume100 μL (to cover prism totally)
Light Sourceyellow LED
Sample Cellstainless steel ring and flint glass prism
Auto-offafter three minutes of inactivity
Enclosure RatingIP65
Battery Type / Life9V / approximately 5000 readings
Dimensions / Weight192 x 102 x 67 mm (7.6 x 4.01 x 2.6”) / 420 g (14.8 oz.)
Ordering InformationHI96811 is supplied with battery and instruction manual