HI 84531-01 Total Alkalinity Mini Titrator for Water Analysis

Manufacturer: HANNA Instruments Inc.

Order number: HI84531-01

Availability:         2 pcs. in stock

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Product information "HI 84531-01 Total Alkalinity Mini Titrator for Water Analysis"


Water Titrator, pH Meter, Electrode and Magnetic Stirrer in one package

• Piston Driven pump with Dynamic Dosing
This piston driven dosing pump incorporates dynamic dosing to provide highly accurate, repeatable results.

CAL CHECK alerts users to potential problems during calibration such as contaminated buffers or dirty/broken electrodes.

• pH/mV Meter
In addition to automatic titration, the
HI 84531 can also be used as a pH/mV meter.

• Log-on-Demand
Log data up to 400 samples
(200 for titration; 200 for pH/mV).

• Graphic Mode/Exportable Data
Displays in-depth data on titration, which can then be stored and exported to either a USB drive or PC using the USB connection.

• Automatic Stirrer Speed Control
Maintains stirrer speed at approximately 600 rpm regardless of viscosity of solution.

• GLP Feature
The HI 84531 includes a GLP Feature that allows users to view calibration data for the pH electrode and dosing pump.

• Easy to use interface
User intuitive design with large keys and easy to navigate screens.

• pH Electrode
The HI 84531 is supplied with the HI 1131B electrode. This versatile electrode can measure all types of water.

The HI 84531 is a dedicated mini titrator and pH meter designed for low to high levels of alkalinity. It performs a potentiometric titration with a pH electrode to determines total titratable alkalinity and strong alkalinity in water. A titrant is slowly added to the sample while the pH and temperature are carefully monitored. The software analyzes the resulting titration curve and calculates the volume of titrant required to reach the endpoint. The user can choose either to measure strong alkalinity with a 8.3 pH end point (known as phenolphthalein alkalinity) or total alkalinity with a 4.5 pH endpoint (known as bromcresol green alkalinity).The dispensed titrant volume is used to automatically calculate the alkalinity, which can be displayed in mg/L or meq/L as CaCO3.Titrations are conducted using the low range titrant HI 84531-50 (30 to 400 mg/L as CaCO3) or the high range titrant HI 84531-51 (300 to 4000 mg/L as CaCO3).

This mini-titrator is also designed to be used as a benchtop pH/mV meter. As a pH meter, it has many features of a professional grade benchtop including automatic calibration up to 3 points with 4 available buffers, a 0.01 pH resolution, accuracy of +/- 0.01 pH, automatic temperature compensation and comprehensive GLP Data. The GLP data includes date, time, offset, slope, and buffers used for calibration. Accuracy is always ensured with Hanna’s unique Cal-Check feature, which analyzes the response of the electrode during the calibration process. Based on electrode response in the buffer, indicators are displayed on screen to alert the user of potential problems during calibration. These indicators include Buffer Contaminated, Electrode Dirty/Broken, and overall probe condition as a percentage that is based on both the offset and slope characteristic of the electrode.
The Cal-Check function not only ensures an accurate pH reading when the HI 84531 is used as a pH meter but also an accurate titration since the end point is determined by a set pH value.


Order Information:
HI 84531-01 (115V) supplied with: HI 84531-70 Reagent Kit for titratable acidity in water products HI 1131B pH electrode HI 7662-T temperature probe HI 740036P Two 100 mL beakers HI 70500 Tube set (aspiration tube with titrant bottle cap and dispensing tube with tip), Dosing Pump Valve HI 740236 5 mL Syringe 1 mL syringe (sample measurement) HI 731319 stir bar HI 920013 power adapter instruction manual and quality certificate

  • Specifications
Range   Low Range: 50 mL sample 30.0 - 400.0 mg/L as CaCO3 0.6 - 8.0 meq/L as CaCO3 High Range: 50 mL sample 300 - 4000 mg/L as CaCO3 6.0 - 80.0 meq/L as CaCO3
Resolution   Low Range: 0.1 mg/L; 0.1 meq/L High Range: 1 mg/L; 1 meq/L
Principal   end point titration : 4.50 pH / 8.30 pH
Accuracy (@25ºC/77ºF)   Low Range: 3% of reading or ± 1 mg/L, whichever is greater High Range 3% of reading or ± 10 mg/L, whichever is greater
Pump Speed   10 mL/min
Stirring Speed   600 rpm
Logging Samples   Up to 200 samples

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