Product Description
Designed for use in the food industry, the HI96821 Digital Refractometer for Measuring Sodium Chloride in Food is a portable, lightweight, and convenient option for sodium measurement. Samples are measured after simple user calibration and within seconds, your reading is done.
Sample size as small as 2 metric drops (100 μl)
Sealed stainless steel well with high-grade optical prism made of flint glass
Fast 1.5 second response time for temperature compensated readings
The HI96821 portable refractometer converts the refractive index of a food sample to g/100 g, g/100 mL, specific gravity and °Baume. These conversions are based on internationally recognized references for unit conversion. The HI96821 is an easy to use tool for measuring sodium chloride in foods, whether on the production line or in the lab.
Designed for sodium chloride analysis in foods
Automatic Temperature Compensation
High accuracy measurements in g/100 g, g/100 mL, specific gravity and °Baume
Making a Standard NaCl Solution (g/100g)
To make a NaCl 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 dried Sodium Chloride (CAS #: 7647-14-5: MW 58.44) directly into a beaker
Add distilled or deionized water to the beaker so the total weight of the solution is 100g.
Example 10g/100g NaCl
NaCl (g)
Water (g)
Total (g)
10.000
90.000
100.000
Refractive Index
The HI96821 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 HI96821 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 HI96821 contains a built-in temperature sensor and is programmed with temperature compensation algorithms in accordance with internationally recognized references which vary based on the parameter being measured.
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
IP65 water resistant protection
Water resistant ABS plastic casing designed to perform under laboratory and field conditions.
Specification Name
Detail
SKU
HI96821
Sodium Chloride Range
0 to 28 g/100 g; 0 to 34 g/100 ml; 1.000 to 1.216 Specific Gravity; 0 to 26 °Baume
Sodium Chloride Resolution
0.1 g/100 g; 0.1 g/100 mL; 0.001 Specific Gravity; 0.1 °Baume
Sodium Chloride Accuracy
±0.2 g/100 g; ±0.2 g/100 mL; ±0.002 Specific Gravity; ±0.2 °Baume
Temperature Range
0.0 to 80.0°C (32.0 to 176.0°F)
Temperature Resolution
0.1°C (0.1°F)
Temperature Accuracy
±0.3°C (±0.5°F)
Automatic Shut-Off
after three minutes of non-use
Battery Type / Life
9V / approximately 5000 readings
Enclosure Rating
IP65
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
Refractometer Temperature Compensation
automatic between 10 and 40°C (50 to 104°F)
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
Supplied with battery and instruction manual.
Warranty
2 years
