Hanna HI 84532-X Offers

Results for this mini titrator displays as % citric acid, tartaric acid, and malic acid. All chemicals are premixed and prepackaged to include standardized titrants, reagents, and pump calibration solution. There is no need for volumetric glassware or analytical balances making titrations fast and easy to perform.

Titratable acidity is a parameter in determining fruit maturity and a sour taste in citrus fruits. The maturity of fruit is one of the most critical factors for determining how well fruit will store and taste. For some fruits, the governmental quality standards (based on titratable acidity or the ratio of total soluble solids (°Brix) to titratable acidity) helps protects consumers. Immature fruit will usually have a low sugar to acid ratio as compared to mature fruit that will have a high sugar to acid ratio.

This mini titrator measures the concentration of titratable hydrogen ions contained in fruit juice samples through neutralization with a base solution to a fixed pH. This value includes all the substances of an acidic nature in the fruit juice with free hydrogen ions, organic acids, and acid salts. Titratable acidity is presented in g/100 mL of the predominant acid. The acids in fruit depend on the type of fruit being tested and include citric acid, tartaric acid, and malic acid.

Features

• Piston driven pump for accurate dynamic dosing
• Complete with glass double junction pH electrode
• Pre-standardized titrant and pre-measured reagents

Double junction pH electrode

This mini titrator 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. This titrator 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

This titrator 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 this titrator 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.