The dual-level LCD displays measurement and temperature readings simultaneously

Automatic Temperature Compensation for accurate measurements
Easy measurement; place a few drops of the sample in the well and press the READ key
BEPS (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings.
IP65 water protection; built to perform under harsh laboratory and field conditions.
Quick, accurate results, readings are displayed in approximately 1.5 seconds.
Single point calibration with distilled or deionized water
Small sample size, can be as small as 2 metric drops.
Automatic shut-off after three minutes of non-use
Stainless steel sample well, easy to clean and corrosion resistant
ABS thermoplastic casing

The HI 96831 Ethylene Glycol Digital Refractometer is a rugged, portable, water resistant device that utilizes the measurement of refractive index to determine the percent volume and freezing point of ethylene glycol based solutions.

This digital refractometer eliminates the uncertainty associated with mechanical refractometers. HI 96831 samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of two measurement units; % volume or freezing point. These meters use internationally recognized references for unit conversion and temperature compensation for glycol solutions (e.g. CRC Handbook of Chemistry and Physics, 87th Edition).

Product Manuals

Manual: Download

Order Information:
HI 96831 is supplied with battery and instruction manual.

Specifications :

Range	% Volume	0 to 100 %
	Freezing Point	0 to -50 °C (32 to -58 °F)
	Temperature	0 to 80 °C (32 to 176 °F)
Resolution	% Volume	0.1 %
	Freezing Point	0.1 °C (0.1 °F)
	Temperature	0.1 °C (0.1 °F)
Accuracy (@20°C)	% Volume	±0.2 %
	Freezing Point	±0.5 °C (±1.0 °F)
	Temperature	±0.3 °C (±0.5 °F)
Temperature Compensation		automatic between 0 and 40°C (32 to 104°F)
Measurement Time		approximately 1.5 seconds
Minimum Sample Volume		100 µL (to cover prism totally)
Light Source		yellow LED
Sample Cell		stainless steel ring and flint glass prism
Auto-off		after three minutes of non-use
Enclosure Rating		IP 65
Battery Type / Battery Life		9V / approximately 5000 readings
Dimensions / Weight		192 x 104 x 69 mm (7.6 x 4.1 x 2.7”) / 420 g (14.8 oz.)