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Hanna’s digital refractometer for brewing measures the sugar content of wort and converts it to °Plato with the push of a single button.
The HI96841 is built tough for use in a brewing environment, fast (1.5-second response), simple to use / clean and accurate to ±0.2 °Plato with automatic temperature compensation.
See Marshall Schott’s review on Brulosophy
Pricing includes the HI96841 refractometer, pipette, and 9V battery.
Small sample size, as small as two metric drops of wort (0.1 mL).
One-button calibration makes setup quick and easy.
Quick, precise results are displayed in 1.5 seconds.
Details
Hanna Instruments HI96841 Digital Refractometer combines form and function into one compact unit. Featuring a 1.5 second response time, the HI96841 measures the refractive index of wort and converts it to °Plato with temperature compensation. The improved easy-to-read LCD screen displays temperature units (°C or °F) and measurements simultaneously. The HI96841’s IP65 water-resistant casing and sealed sample well are built to perform under harsh conditions, making it suitable for use in any brewery.
The °Plato scale is a way to quantify the concentration of sugars and dissolved solids in wort. This measurement can indicate the potential alcohol content of finished beer. The HI96841 converts the refractive index reading to °Plato based on the tables maintained by the International Commission for Uniform Methods of Sugar Analysis (ICUMSA) and the American Society of Brewing Chemists (ASBC).
Designed for wort sugar analysis
Temperature compensation algorithms based on sucrose solution
0 to 30 °Plato range with ± 0.2 °Plato
Refractive Index
The HI96841 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 HI96841 uses a LED light, prism, and lens to make measurement possible.
Variations in temperature will affect the density of a solution based on the compound that is present. In digital refractometry, the use of temperature compensation is necessary for accurate results. The HI96841 contains a built-in temperature sensor and is programmed with temperature compensation algorithms in accordance with the ICUMSA Methods Book for a percent by weight sucrose solution.
Alcohol Interference
It should be noted that once fermentation begins, ethanol and the residual sugar interfere with each other and prevent an accurate reading of the Brix value of your residual sugar.. For this reason, this refractometer cannot be used with finished beer or other fermented beverages. It is designed for use with wort only.
Features at-a-glance:
One-point calibration
Calibrate with distilled or deionized water.
Small sample size
Sample size can be as small as two metric drops (0.1 mL).
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.
Specifications
Sugar Content Range
0 to 30 °Plato
Sugar Content Resolution
0.1 °Plato
Sugar Content Accuracy (@25ºC/77ºF)
±0.2 °Plato
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)
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 inactivity
Enclosure Rating
IP65
Battery Type / Life
9V / approximately 5000 readings
Dimensions / Weight
192 x 102 x 67 mm (7.6 x 4.01 x 2.6”) / 420 g (14.8 oz.)
Ordering Information
HI96841 is supplied with 9V battery and instruction manual.
Warranty
2 years
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