Mini Titrator for Measuring Titratable Acidity in Fruit Juice - IC-HI84532

The HI84532 is a simple, fast, and affordable automatic mini titrator designed for testing the acidity of fruit juice. 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 glass body pH electrode.

The HI84532 incorporates a precision piston style dosing pump that adjusts the volume of titrant dosed dynamically based on a voltage change. This dosing system reduces the amount of time required for the titration while providing for a highly accurate determination of the amount of titrant used.

This mini titrator is supplied complete with all the materials necessary to perform low and high range measurements of titratable acidity in fruit juice. Results are displayed as % citric acid, tartaric acid and malic acid. All chemicals are premixed and prepackaged including standardized titrants, reagents and pump calibration solution. There is no need for volumetric glassware or analytical balances making titrations fast and easy to perform.

Features:

- Double Junction pH Electrode: The HI84532 is supplied with the HI1131B refillable, double junction, combination pH electrode. By design, the HI1131B has a spherical tip for use in aqueous or liquid solutions. This versatile electrode provides a wide surface of contact with a sample and is ideal for direct measurements or titrations in the beverage industry.
- Custom pH Calibration: According to AOAC International the titration endpoint for fruit products is pH 8.1. The HI84532 uses a custom calibration point of pH 8.20. The preprogrammed pH 4.01 and pH 8.20 calibration points allows for calibration of the meter that brackets the pH readings.
- Good Laboratory Practice: The HI84532 offers comprehensive GLP information including date and time of the last pH electrode and dosing pump calibrations. Tracking calibrations are critical to have confidence in the results obtained from titrations. The GLP data is stored along with any logged readings.
- Piston Driven Dosing Pump: The heart of the HI84532 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. This titrant is dynamically dosed, where titrant is delivered in larger doses at the start of the titration and smaller doses near the end point. With larger doses in the beginning of the titration, the speed of the titration is increased, where smaller doses near the end point allow for more time for the titrant and analyte to react. Smaller doses also prevent the over titration of a sample and a more accurate determination of titrant volume used.
- Automatic Stirrer: The built-in stirrer is automatically maintained at a speed of 600 rpm, regardless of the viscosity of the solution being titrated.

The HI84532 is supplied with HI1131B pH electrode, HI84532-50 low range titrant (100 mL), HI84532-51 high range titrant (100 mL), HI84532-55 calibration standard (100 mL), HI7662-T temperature probe, HI7082 electrode fill solution (30 mL), 100 mL beakers (2), 20 mL beaker, tube set (aspiration tube with titrant bottle cap and dispensing tube with tip), dosing pump valve, 5 mL syringe, 1 mL plastic pipette, stir bar, power adapter, instruction manual and quality certificate.

Measurement specifications:

- pH Range: -2.0 to 16.0 pH; -2.00 to 16.00 pH
- pH Resolution: 0.1 pH/0.01 pH
- pH Accuracy: +/- 0.01 pH (at 25 C/77 F)
- pH Calibration: one, two, or three-point calibration, four available buffers (4.01, 7.01, 8.20, 10.01)
- pH Temperature Compensation: manual or automatic
- pH-mV Range: -2000.0 to 2000.0 mV
- pH-mV Resolution: 0.1 mV
- pH-mV Accuracy: +/- 1.0 mV (at 25 C/77 F)
- 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: +/- 0.4 C; +/- 0.8 F; +/- 0.4 K (at 25 C/77 F), without probe error

Titration specifications:

- Titration Range (Low Range (g/100 mL)): citric acid: 0.10 to 2.00% CA; tartaric acid: 0.11 to 2.35% TA; malic acid: 0.10 to 2.09% MA
- Titration Range (High Range (g/100 mL)): citric acid: 1.00 to 10.00% CA; tartaric acid: 1.17 to 11.72% TA; malic acid: 1.05 to 10.47% MA
- Titration Resolution: 0.01%
- Titration Accuracy: +/- 0.02% or 3% of reading CA whichever is greater (@25C/77F)
- Titration Method: acid base titration
- Titration Principle: endpoint titration: 8.1 pH
- Titration Pump Speed: 10 mL/min
- Titration Stirring Speed: 600 rpm
- Sample Size: Low Range: Low Range: 5 mL High Range: 5 mL

General specifications:

- pH Electrode: HI1131B glass body, refillable, 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)
- Logging Type: Log-on-demand
- Logging Memory: up to 400 ( 200 titrations, 200 pH/mV readings)
- Connectivity: 1 USB port for data storage and export to a PC
- Built-in Magentic Stirrer: Built-in magnetic stirrer at 600 rpm
- Power Supply: 12 VDC adapter (included)
- Environment: 0 to 50 C (32 to 122 F); RH max 95% non-condensing
- Dimensions: 235 x 200 x 150 mm (9.2 x 7.9 x 5.9)
- Weight: 1.9 kg (67.0 oz.)