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HI96813 Refractometer for Measuring Sugar and Alcohol Content in Wine, Jam and Juice

Producer: HANNA Instruments

SKU: HANNA-HI96813 Category: Hanna experimental measuring equipment

– Compact handheld refractometer

– Used to measure sugar content (% Brix) and alcohol content (%V/V) in wine, jam and juice.

– High accuracy ± 0.2%.

– Automatic temperature compensation

– Response time 1.5 seconds.

– Flint glass prism and stainless steel are easy to clean.

– Small sample size requires only 2 drops (100 μl)

– Stainless steel ring with premium optical prism made of flint glass

The HI96813 is a portable refractometer that converts the refractive index of a sample to sucrose concentration as a percent by weight (%Brix). This conversion is based on the ICUMSA (International Commission for Uniform Methods of Sugar Analysis) Methods Book for changes in refractive index with temperature in a percent by weight glucose solution. Since the majority of the sugar in grape juice is fructose and glucose rather than sucrose, the reading is sometimes referred to as “Apparent Brix”.

The HI96813 allows the user to tailor the instrument to their specific needs based on their experience, as there is no specific conversion factor for all applications. The initial conversion is based on the % Brix value and the conversion factor is adjustable from 0.50 to 0.70 (0.55 is a common value).

Alcohol content (%V/V) = (0.50 to 0.70) x % Brix

One drawback to the above equation is that it does not take into account unfermentable and extractable sugars. A second equation is also available that takes these factors into account and can give a more accurate estimate of the alcohol content of the finished wine. This conversion is labeled “C1” on the machine and uses the following equation:

Alcohol content (% V / V) = 0.059 x [(2.66 x °Oe) – 30] (C1)
* 1°Oe is approximately equal to 0.2% Brix

The HI96813 is an easy-to-use tool for winemakers to measure sugar and alcohol content in grapes or fermented grape juice, either in the field or in the laboratory.
– Designed for sugar alcohol and alcohol content analysis
– Temperature compensation algorithm based on sucrose solution
– Measuring range from 0 to 50% Brix with accuracy ± 0.2% Brix and measuring range from 0-25% alcohol content with accuracy ± 0.2% potential alcohol

Refractive Index

The HI96813 allows for measurements based on a sample’s refractive index. Refractive index is a measure of how light behaves as it passes through a sample. Depending on the composition of the sample, light will refract and reflect differently. By measuring this 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 HI96813 uses an LED light, prism, and lens to make measurement possible.

Temperature variations will affect the accuracy of refractometry results, so temperature compensation is necessary to produce reliable results. The HI96814 incorporates a built-in temperature sensor and is programmed with industry-standard algorithms that then apply temperature compensation to measurements according to ICUMSA standards for a percent by weight sucrose solution.

To make a standard % Brix solution (sucrose):

To make a Brix solution, follow the steps below:

Place the container (such as a glass jar or dropper bottle with a cap) on an analytical balance.
Tare
To make an X BRIX solution, weigh X grams of High Purity Sucrose (CAS #: 57-50-1) directly into the container.
Add distilled or deionized water to the container so that the total weight of the solution is 100g.

Note: The solution above 65% Brix should be stirred vigorously or shaken and heated in a water bath to 40^oC. Remove the solution from the tank when the sucrose has dissolved and allow to cool before use.

Sample 25% Sucrose:

% Brix (g/100g)	Sucrose (g)	Water (g)	Total (g)
25	25.000	75.000	100.000

SALIENT FEATURES

1 point calibration

Calibrate with distilled or deionized water

Small sample size

Sample requires only about 2 drops (100 μl)

Automatic Temperature Compensation (ATC)

Sample automatic temperature compensation

Provides fast and accurate results

Results displayed after about 1.5 seconds

Multi-level LCD display

LCD display shows measurement value and temperature at the same time

Stainless steel sample chamber

Easy to clean and corrosion resistant

Battery indicator

Remaining battery level will be displayed when power on and low battery warning

Automatically turns off

The machine will automatically turn off after 3 minutes of non-use.

Waterproof IP65

Waterproof ABS plastic housing makes it easy to perform measurements in the laboratory and many other fields

SPECIFICATIONS

The scale	0 to 50% Brix; 0-25% V/V alcohol content 0 to 80°C (32 to 176°F)
Resolution	0.1% Brix; 0.1% V/V 0.1°C (0.1°F)
Accuracy	±0.2% Brix; ±0.2% V/V; ±0.3°C (±0.5°F)
Temperature compensation	automatic from 10 to 40°C (50 to 104°F)
Measurement time	about 1.5 seconds
Minimum sample size	100 μL
Light source	Yellow LED
Sample compartment	Stainless steel ring and glass prism
Automatically turns off	after 3 minutes of non-use
Bark	IP65
The battery	9V
Size	192 x 102 x 67 mm
Mass	420 g
Guarantee	12 months
Supply includes	HI96813 is supplied with batteries and instructions.