Description
The refractive index of a food sample is converted to percent of glucose by weight using the portable HI96803 refractometer. The tables in the ICUMSA Methods Book (International Commission for Uniform Methods of Sugar Analysis) that show how the refractive index changes with temperature for a % by weight glucose solution provide the basis for this conversion. Fruits, energy drinks, puddings, soy milk, juices, jam, marmalade, honey, soups, jelly, tofu, and sauces are all excellent candidates for analysis with the HI96803. The HI96803 is a simple-to-use device for determining the amount of sugar in food samples in a lab or out in the field.
- Designed for food sugar analysis
- Temperature Compensation algorithms based on glucose solution
- 0 to 85% glucose by weight range with an accuracy of ± 0.2%
Making a % Standard Glucose Solution
To make a glucose 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 glucose (CAS #: 50-99-7) directly into a beaker
- Add distilled or deionized water to the beaker so the total weight of the solution is 100g.
- Note: Solutions above 60% may need to be vigorously stirred or shaken and heated in a water bath to roughly 40°C (104°F). Remove solution when fructose has dissolved and allow to cool before use.
Example to prepare as 25% glucose solution:
| Glucose % (g/100g) | Glucose (g) | Water (g) | Total (g) |
| 25 | 25.000 | 75.000 | 100.000 |
Refractive Index
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 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
Stainless steel sample well
- Easy to clean and corrosion-resistant
IP65 water resistant protection
- Water resistant ABS plastic casing designed to perform under laboratory and field conditions.
| SKU | HI96803 |
|---|---|
| Product Name | Digital Refractometer for % Glucose by Weight Analysis – HI96803 |
| Quote Required | Yes |
| Sugar Content Range | 0 to 85% mass (% w/w glucose) |
| Sugar Content Resolution | 0.1% mass |
| Sugar Content Accuracy | ±0.2% mass |
| Temperature Range | 0 to 80°C (32 to 176°F) |
| Temperature Resolution | 0.1°C (0.1°F) |
| Temperature Accuracy | ±0.3 °C (±0.5 °F) |
| Temperature Compensation | automatic between 10 and 40°C (50 to 104°F) |
| Automatic Shut-Off | after three minutes of inactivity |
| Battery Type/Life | 9V / approximately 5000 readings |
| Dimensions | 192 x 102 x 67 mm (7.6 x 4.01 x 2.6”) |
| Weight | 420 g (14.8 oz.) |
| Refractometer Light Source | yellow LED |
| Minimum Sample Volume | 100 μL (to cover prism totally) |
| Sample Cell | stainless steel ring and flint glass prism |
| Measurement Time | approximately 1.5 seconds |
| Ordering Information | HI96803 is supplied with battery and instruction manual |
| Notes | Enclosure Rating |
