Hanna HI-12302 HALO® PEI Body Gel Filled pH Electrode

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Hanna HI-12302 HALO® PEI Body Gel Filled pH Electrode

The HI12302 HALO is a Bluetooth Smart (Bluetooth 4.0) pH and temperature electrode with a durable PEI body and a spherical glass low temperature sensor bulb. The double junction design ensures that the gel electrolyte is free of silver chloride (AgCl) between the sample to be measured and the internal reference cell, resisting clogging and potential deposition at the junction.

Product Description

Hanna HI-12302 HALO® PEI Body Gel Filled pH Electrode with Bluetooth®

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The HI12302 HALO is a Bluetooth Smart (Bluetooth 4.0) pH and temperature electrode with a durable PEI body and spheric, low temperature glass sensing bulb.

The double junction design ensures that the gel electrolyte is free of silver chloride (AgCl) between the sample to be measured and the internal reference cell, resisting clogging and any potential precipitation at the junction.

All readings are transmitted directly to the HI2202 edgeblu or a compatible Apple or Android device running the Hanna Lab App.

One Press Connect

Easily connect to the Hanna Lab App at the press of a button via Bluetooth wireless technology.

Status Indicator

Visible from a distance, the LED “halo” light flashes to indicate the status of the probe.

Easy-to-Replace Battery

The HALOs CR2032 lithium ion battery is easily replaceable and lasts for approximately 500 hours.

HALOTM - pH Probe with Bluetooth® Smart Technology

The HI12302 HALO is a revolutionary pH electrode that incorporates Bluetooth Smart (Bluetooth 4.0) wireless technology with an application-specific design. This electrode has many features that makes it ideal for use in the field or on the production floor. These features include Low Temperature (LT) glass, spheric bulb, integrated temperature sensor, PEI body, and double reference junction with silver-free gel electrolyte.

Speric Tip

Spheric Glass Tip

The spheric bulb is for general purpose use within laboratory environments and applications that measure aqueous solutions due to its large surface area. Other tip shapes include conic for penetration and flat tip for surface measurements.

temperature sensor

Built-In Temperature Sensor

HI12302 features a built-in thermistor temperature sensor that is in the tip of the indicating pH electrode. A thermistor temperature sensor provides for a high accuracy temperature reading and should be as close as possible to the indicating pH electrode in order to compensate for the effect that temperature has on the membrane potential as predicted by the Nernst equation. By having an accurate reading it is possible to provide a temperature compensated reading.

pH electrode

pei body

PEI Body

The body of the HI12302 is composed of polyetherimide (PEI) resin. PEI is suitable for a wide range of applications and excels in field measurements due to its durability. The shielding around the spherical glass tip minimizes breakage due to accidental bumping or dropping of the electrode. PEI is a high quality plastic that is chemically resistant to many aggressive chemicals.

single ceramic double junction reference

Single Ceramic Double Junction Reference

The HI12302 is a double junction design. pH electrodes are available as single junction or double junction. See below for a complete description of the differences. The junction also known as a salt bridge is necessary component of the electrical circuit. The movement of ions must flow through the junction for a steady reading. The outer portion of the reference cell has a single ceramic frit. A single ceramic junction allows the gel electrolyte to flow at a rate of 15 to 20 μL/hour.

Conventional electrodes are normally single junction. As depicted by the figure above, these electrodes have only a single junction between the internal reference wire and the external solution. Under adverse conditions, such as high pressure, high temperature, highly acidic or alkaline solutions, the positive flow of the electrolyte through the junction is often reversed resulting in the ingress of sample solution into the reference compartment. If this is left unchecked, the reference electrode can become contaminated, leading to complete electrode failure. Another potential problem with single junction electrodes is the clogging of the junction due to silver chloride (AgCl) precipitation. Silver can be easily precipitate in samples that contain Tris buffer or heavy metals. When the electrolyte solution makes contact with the sample, some AgCl will precipitate on the external face of the junction. The result is drifty readings obtained from the sensor.

Hanna’s double junction system, as the name implies, has two junctions, only one of which is in contact with the sample as shown in the figure. Under adverse conditions, the same tendency of sample ingress is evident. However, as the reference electrode system is separated physically from the intermediate electrolyte area, the contamination of the electrode is minimized. The likelihood of clogging of the junction is also reduced with a double junction electrode since the outer reference cell uses a fill solution that is “silver-free.” Since there is no silver present, there is no precipitate that can form to clog the junction.

Hanna Lab App

HALO pH electrodes can connect with HI2202 edgeblu meter or a compatible Apple or Android device running the Hanna Lab App.

HALOTM - pH Probe with Bluetooth® Smart Technology

The Hanna Lab App turns a compatible Apple or Android device into a full-featured pH meter when used with the Hanna HALO pH probe with Bluetooth Smart technology. Functions include calibration, measurement, data logging, graphing and data sharing. Measurement and logging of pH and temperature at one second intervals start as soon as the probe is connected. Measurements can be displayed alone on the display, with tabulated data, or as a graph. The graph can be panned and zoomed with pinch-to-zoom technology for enhanced viewing.

Five-Point Calibration

The Hanna Lab App incorporates a probe calibration using up to five pH buffers that are automatically recognized and temperature corrected to 25.0ºC during calibration.

Real-Time Data

Display of pH and temperature updated every second. Readings are automatically saved to a history file every hour, limited only by the available memory on the device.

Fluid, Dynamic Graphing

Measurement can be displayed with tabulated data or a graph on the display. The graph axes may be expanded using pinch-to-zoom technology for enhanced viewing.

HALO pH probe features

Connecting the HALO probe to the Hanna Lab App is simple. Tap the Bluetooth icon in the top-right corner to view all available HALO probes then press the button on your HALO probe. Select the newly discovered HALO probe from the list of available probes. If a previously associated probe is in discovery mode when the app is opened it will connect to that probe automatically.

GLP (Good Laboratory Practice)

Displays date and time of current calibration, probe offset, and average slope, along with calibrated buffers, mV values, temperature and slopes between each buffer.

Calibration Reminder & Measurement Alarms

The Hanna Lab App alerts you when HALO needs calibration or if a measurement threshold is exceeded.

Log & Share Data

Saved log files may be annotated with measurement specific information. Data is easily shared via email in CSV format.

Help & Tutorials

Demo probe mode helps you explore features of the Hanna Lab App. General app information, General HALO information, pH tutorial, maintenance tutorial, and contact information are available in help.

Hanna Lab App Features/Benefits

Connects to HALO electrodes via Bluetooth Smart Technology (Bluetooth 4.0)

Up to five-point pH calibration with seven standard pH buffers available
Calibration reminder

  • Alerts you when HALO needs calibration

Real-time data

  • Displays pH and temperature updated every second

Basic GLP

  • Displays date and time of current calibration along with probe offset and average slope

Full GLP

  • Displays date and time of current calibration, probe offset and average slope along with calibrated buffers, mV values, temperature and slopes between each buffer

Fluid, dynamic graphing

  • Measurement can be displayed with tabulated data or as a graph. The graph axes may be expanded using pinch-to-zoom technology for enhanced viewing

Measurement alarms

  • Alerts you if the measurement threshold is exceeded

One button sample tagging

  • Pressing either the probe icon in the Hanna Lab App or button on the HALO pH probe will tag sample data for easy reference

Data-logging with custom annotations

  • Saved log files may be annotated with measurement  specific  information
  • Data is autosaved every hour

Four ways to save and share data:

  • All data since last autosave
  • Annotations only
  • All data within a timed interval
  • Annotations only within a timed interval

Share data via email in CSV format

Help and tutorials:

  • Demo probe mode to help explore features of the Hanna Lab App
  • General app information
  • General HALO information
  • pH tutorial
  • Maintenance tutorial
  • Contact information

Compatibility:

HALO pH electrodes are compatible with HI2202 edgeblu meter and the following devices:

Android

Compatible with most devices equipped with Bluetooth Smart Technology (Bluetooth 4.0) and running Android 4.3 or later.

iOS

  • iPad (3rd generation or newer)
  • iPhone (4S or newer)
  • iPod Touch (5th generation or newer)

Information about which products have Bluetooth Smart Technology (4.0), also known as low energy (LE), can be found here.

Video

 

 


Hanna HI-12302 – Manual 


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Additional Information

Brand

Hanna

Model

HI-12302

Made In

Romania

Weight

1 kg

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