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Mini Titrator for Measuring Titratable Acidity in Wine - HI84502

The HI84502 is a simple, fast, and affordable automatic mini titrator designed for testing total acidity levels in wine. Based on an acid-base titration method, this mini titrator uses an optimized preprogrammed method of analysis with a powerful algorithm that determines the completion of the titration reaction by the use of a specialized wine pH electrode.

Brand: Hanna

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Product CodeProduct Product Description Price (Excl gst) Qty Add
HA-HI84502-02 Mini Titrator for Measuring Titratable Acidity in Wine - HI84502 Mini Titrator for Measuring Titratable Acidity in Wine - HI84502 Login for price  

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Acids occur naturally as grapes grow and during the eventual fermentation process. Wines have lower levels of acid when there is a hot growing season or when the grapes come from warmer regions. In the proper proportion, acids are a desirable trait, giving the wine a distinct character. The three predominant acids in wine are tartaric, malic and citric. Tartaric acid is the principal acid in grapes and is a component that promotes a crisp flavor and graceful aging in wine. A moderate amount of a wine’s acid comes from malic acid, which contributes to fruitiness. A small amount of titratable acidity comes from citric acid. Wine also contains trace amounts of other acids; the least desirable acid in wine is acetic acid, which, when present in more than a nominal amount, gives wine a sour or vinegary aspect.

Total acidity, also called titratable acidity, is the sum of the fixed and volatile acids. In the United States, the total acidity is usually expressed in terms of tartaric acid, even though other acids are also measured. Total acidity directly affects the color and flavor of wine and, depending on the style of the wine, is sought in a perfect balance with the sweet and bitter sensations of other components. Too much acidity makes wine tart and sharp; too little makes wines flat and uninteresting. Proper acidity in wine is what makes it refreshing and an ideal accompaniment to food. The proper acid level of a wine varies, with sweeter wines generally requiring somewhat higher levels to retain the proper balance.

Application-Specific pH Electrode

The HI84502 is supplied with the HI1048B glass body pH electrode featuring CPS™technology to prevent the clogging of the reference junction. Conventional electrodes may clog quickly in biological samples that have a high solids content such as wine must. By design, the HI1048B pH electrode utilizes a polytetrafluoroethylene (PTFE) sleeve junction which controls a steady, predictable flow of electrolyte solution, keeping the junction open. The hydrophobic properties of PTFE repel wetness and coatings.

Piston Driven Dosing Pump

The heart of the HI84502 is the piston driven burette pump. This type of dosing system uses a motor in which each dose is very precisely controlled and the volume dispensed is accurately determined. The piston driven burette is controlled dynamically so that the volume of titrant being dosed is automatically adjusted based on a voltage response of the previous dose. This type of dosing speeds up the titration process by allowing for more titrant to be dosed at the start of the titration and then very small doses as the endpoint is reached.

Automatic Stirrer

The built-in stirrer is automatically maintained at a speed of 600 rpm, regardless of the viscosity of the solution being titrated.

Range Low Range: 0.1 to 5.0 g/L of tartaric acid; High Range: 4.0 to 25.0 g/L of tartaric acid
Resolution 0.1 g/L (ppt)
Accuracy (@25ºC/77ºF) 3% of reading or ±0.1 g/L, whichever is greater
Sample Volume Low Range: 10 mL; High Range: 2 mL
Methods acid base titration
Principle endpoint titration: 7.00 pH or 8.20 pH
Pump Speed 10 mL/min
Stirring Speed 600 rpm
pH Range -2.0 to 16.0 pH; -2.00 to 16.00 pH
pH Resolution 0.1 pH / 0.01 pH
pH Accuracy (@25ºC/77ºF) ±0.01 pH
pH Calibration one, two, or three-point calibration, four available buffers (4.01, 7.01, 8.20, 10.01)
Temperature Compensation manual or automatic
mV Range -2000.0 to 2000.0 mV
mV Resolution 0.1 mV
mV Accuracy (@25ºC/77ºF) ±1.0 mV
Temperature Range -20.0 to 120.0°C; -4.0 to 248.0°F; 253.2 to 393.2 K
Temperature Resolution 0.1°C; 0.1°F; 0.1K
Temperature Accuracy (@25ºC/77ºF) ±0.4°C; ±0.8°F; ±0.4 K
Logging Data up to 400 ( 200 titrations, 200 pH/mV readings)
Electrode HI1048B glass body pH electrode with BNC connector and 1 m (3.3’) cable (included)
Temperature Probe HI7662-T stainless steel temperature probe with 1 m (3.3’) cable (included)
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Power Supply 12 VDC adapter (included)
Dimensions 235 x 200 x 150 mm (9.2 x 7.9 x 5.9”)
Weight 1.9 kg (67.0 oz.)
Ordering Information HI84502 is supplied with HI1048B pH electrode, HI7662-T temperature probe, HI7082 electrode fill solution (30 mL), HI84502-50 (230 mL) titration solution, HI84502-55 pump calibration standard (120 mL), 100 mL beakers (2), dosing pump valve, 2000 μL automatic pipette with plastic tips (2), 5 mL syringe, 1 mL plastic pipette, tube set (aspiration tube with titrant bottle cap and dispensing tube with tip), stir bar, cleaning solution sachets for wine deposits, cleaning solution sachets for wine stains (2), 12 VDC adapter and instruction manual.
Warranty meter 2 years, probe 6 months

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