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Force and mechanical measuring equipment
The HI84502 is a fast, convenient and easy-to-use titrator for determining the total acid content of wine. Based on the acid-base reaction, combined with a powerful algorithm and a dedicated pH electrode, the mini titrator can accurately determine the end point of the reaction. In addition, the HI84502 is also equipped with a piston pump in dynamic pumping mode, automatically adjusting the amount of reagent injected based on the change in the potential of the sample during the titration, helping to save reaction time while still ensuring reliable results. The HI84502 is supplied with all the necessary materials to determine the acid content of both the low and high ranges. The chemicals supplied have been mixed in the correct proportions and packaged in a closed process including standards, reagents and pump calibration solutions, eliminating the need for additional glass pipettes and analytical balances.
Piston pump with dynamic pump mode.
HI1048B pH electrode with integrated CPS technologyTM.
Standard solutions and reagents.
Acids are produced during the growth of grapes and play an important role in the fermentation of grapes. Wine will have a low acid content if the grapes are harvested in the hot season or come from tropical regions. In the right amounts, acids will create a rich, characteristic flavor for each type of wine. The three main acids in wine are tartaric acid, malic acid and citric acid. Tartaric acid is the main acid in grapes and creates a pleasant, clean, faint flavor in wine. The second most abundant is malic acid, which helps people recognize the natural grape flavor of wine, and finally, citric acid is the third most abundant acid in wine. In addition, wine also has many other acids, of which the least desirable is acetic acid, because in larger than normal amounts, it will make the wine taste sour and astringent like vinegar.
Total acidity, also known as titratable acidity, is the sum of the fixed and volatile acids in wine. In the United States, total acidity is usually expressed as tartaric acid, although other acids also react (since tartaric acid is the most abundant). Total acidity has a direct impact on the color and flavor of wine. Depending on the type of wine, acidity will combine differently with other elements in the wine to create different sweet and sour flavors. Too much acid will make the wine taste sour, too little will reduce the quality, causing a bland, unflavored feeling for the drinker. A moderate amount of acidity will help the wine create a refreshing, healthy feeling for the drinker, making it the perfect complement to meals.
Dedicated pH electrode. HI84502 is supplied with HI1048B pH electrode with integrated CPS functionTM prevents the junction from clogging during titration. Electrodes are prone to clogging when used in solutions with high levels of dissolved solids such as alcohol. In addition, the HI1048B electrode uses a glass tubular junction and PTFE plastic covering the electrode body to ensure that the flow of electrons in and out of the junction is always stable. The PTFE plastic coating with water-repellent properties ensures that the electrode does not retain alcohol, minimizing electrode contamination that can lead to errors in subsequent measurements.
Piston pump. The most important device of HI84502 is the piston pump. Using a motor to control the operation of the piston makes it easier to control the pumping process, and the amount of reagent pumped out is also more accurate. The pumping mode is set to dynamic, so the amount of reagent pumped in will change depending on the change in potential in the sample after each pump, so when titrating, the machine will pump more reagent to shorten the time, when approaching the end point of the reaction, the amount of reagent will gradually decrease to ensure the accuracy of the measurement process.
Magnetic stirring feature. The magnetic stirrer is integrated into the machine, automatically maintaining a speed of 700 rpm, making it easy to titrate highly viscous samples.
On-screen features
Easy-to-use interface: HI84502 has a user-friendly design, sharp keypad, large screen for easy use. In addition, the device is installed with a tutorial software, when activated, will guide the user on how to use the device step by step. During use, if there are any questions, the user can press the HELP key for information support.
Warning sign: users will be alerted in case errors occur when using the machine (eg: reagent volume exceeds the allowable limit..)
Graph mode: the mini titrator displays data throughout the titration, including real-time graphs.
Logging on Demand: The HI84502 allows for logging of up to 400 samples: 200 titration results and 200 pH/mV measurements. These data can be stored to a USB drive or transferred to a PC via the USB port.
As a pH/mV meter: in addition to being a titrator, the HI84502 can also be used as a benchtop pH meter, with automatic temperature compensation, automatic buffer recognition, up to 3-point calibration, ±0.01pH accuracy, and GLP data storage.
CAL Check feature. The machine will automatically analyze the electrode response signal during the calibration process and notify the user of problems that may affect the measurement results such as contaminated buffer solution, dirty electrode or cracking… the CAL Check feature not only ensures the accuracy of pH measurements but also helps ensure accuracy in determining the end point of the titration process.
Specifications
|
The scale |
Low range: 0.1 – 5.0 g/L tartaric acid; High range: 4.0 – 25.0 g/L tartaric acid |
|---|---|
|
Resolution |
0.1 g/L (ppt) |
|
Accuracy (@25ºC/77ºF) |
3% measurement result or ±0.1 g/L |
|
Sample volume |
Low range: 10 mL Height: 2 mL |
|
Method |
Acid-base reaction |
|
Rule |
Reaction ends at: 7.00 pH or 8.20 pH |
|
Pump speed |
10 mL/min |
|
Stirring speed |
700 rpm |
|
pH scale |
-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 |
Maximum 3 points based on rear buffer system (4.01, 7.01, 8.20, 10.01) |
|
Heat compensation |
Manual or automatic |
|
mV scale |
-2000.0 – 2000.0 mV |
|
mV resolution |
0.1 mV |
|
mV accuracy (@25ºC/77ºF) |
±1.0 mV |
|
Temperature scale |
-20.0 – 120.0°C; -4.0 – 248.0°F; 253.2 – 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 |
|
Save the template |
Maximum 400 (200 titrations, 200 pH/mV measurements) |
|
Electrode |
HI1048B pH electrode with BNC connector, 1 m (3.3') cable |
|
Temperature electrode |
HI7662-T, 1 m (3.3') cable |
|
Operating environment |
0 – 50°C (32 – 122°F); Max RH 95% non-condensing |
|
Source |
12 VDC adapter |
|
Size |
235 x 200 x 150 mm (9.2 x 7.9 x 5.9”) |
|
Mass |
1.9 kg (67.0 oz.) |
|
Supply includes |
HI84502-02 (230V) is supplied with HI1048B pH electrode, HI7662-T temperature electrode, HI7082 electrode fill solution (30 mL), HI84502-50 standard solution (230 mL), HI84502-55 pump calibration solution (120 mL), 100 mL plastic beakers (2), 20 mL plastic beakers (2), pump valve, automatic pipette with 2000 μL plastic tips (2), 5 mL syringe, 1 mL plastic pipette, tubing, magnetic filter, alcohol electrode cleaning solution, alcohol electrode cleaning solution (2), 12 VDC adapter and instruction manual. |
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
Hanna experimental measuring equipment
