HI36180 Digital Glass Body ORP Electrode for General Purpose


HI36180 is a glass body, double junction, refillable ORP electrode with a built-in temperature sensor. This electrode has a single ceramic junction and the ORP sensing pin is made with platinum.

As a digital ORP electrode, it features a built-in microchip that stores sensor type, serial number, and calibration information. This probe connects to the meter with a 3.5 mm connector. The 3.5 mm connector is proprietary to meters that use digital electrodes. This design consideration is ideal for laboratories and general purpose ORP measurements.

  • Built-In Microchip
  • Platinum Sensing Pin
  • 3.5 mm Connector
Κωδικός προϊόντος: HI36180 Κατηγορίες: , Ετικέτα:

Πληροφορίες προϊόντος

Hanna Instruments offers a wide variety of ORP electrodes that are designed for many different applications. The type of material used for the sensing pin, type of glass used for body material, type of junction, type of reference and electrolyte used are just some of the design considerations.

The HI36180 features a platinum sensing pin, glass body, double junction reference and is refillable with 3.5M KCl.

Built-in Microchip

The built-in microchip stores sensor type, serial number and calibration information including date, time, offset, slope, probe condition and buffers used. This information is automatically retrieved by edge® once the electrode is plugged in. The ability to transfer information allows for hot swapping of probes without having to recalibrate. 

All pH measurements are performed within the electrode and transferred digitally to the meter. This overcomes any noise issues associated with the traditional high impedance analog measuring system. Electrical noise can be generated from a built in temperature sensor and while working in a humid environment.


Platinum Sensing Pin

The HI36180 ORP sensor is made with platinum. An ORP sensor must be chemically inert; it cannot be oxidized or reduced itself. It must also have the proper surface characteristics to promote rapid electron exchange, a property known as high exchange current density. Two noble metals have proven to work well for this purpose: pure platinum and pure gold are both used in the construction of ORP sensors. The platinum sensor is often preferred because it is mechanically simpler and safer to produce. Platinum can be welded to glass and has the same thermal coefficient. The platinum sensor signal is carried through the electrode body, and together with the reference signal is conducted to the measurement meter.


Glass Body

The glass body is ideal for laboratory use. The glass is resistant to many harsh chemicals and is easily cleaned. The glass body also allows for a fast transfer of heat to the internal reference electrolyte. The mV generated by the reference cell is temperature dependent. The faster the equilibrium the steadier the reference potential.



Double Junction Reference

A double junction electrode has an internal compartment surrounding the reference wire. Silver ions are present in the electrolyte of the internal compartment, which houses the Ag/AgCl reference wire; the electrolyte outside this compartment is silver free. The double junction design means that virtually no silver from the electrode enters the sample. This design allows measurement in applications where silver ions in the sample are undesirable or silver precipitates on the junction are likely to form.




The HI3131B is a refillable probe. Since it is a single junction ORP electrode the fill solution is the HI7071 3.5M KCl + AgCl. If using a refillable ORP electrode, the fill cap should be removed prior to measurement. Removing the cap creates positive head pressure in the reference cell allowing for higher flow rate of electrolyte through the outer junction. A higher flow rate will result in a faster and more stable reading.


Built-In Temperature Sensor

HI36180 features a built-in thermistor temperature sensor.  A thermistor temperature sensor provides for a high accuracy temperature measurement.



Product NameDigital Glass Body ORP Electrode for General Purpose
Stock Status MessageCall if accurate shipping time is required
Quote RequiredNo
Measurement RangeORP
Reference Cell Typedouble, Ag/AgCl
Junction Type/Flow Rateceramic, single/ 15-20 μL/h
Refill Electrolyte3.5M KCl
Body MaterialGlass
Tip / Shapeplatinum pin
Matching Pinno
Max. Pressure0.1 bar
Temperature Operating Range-5 to 100°C (23 to 212°F)
Body Length/Overall Length120 mm / 175.5 mm
Temperature SensorYes
Outer Diameter12 mm
Cable1 m (3.3’)
Connector Type3.5 mm connector
Recommended Uselaboratory general purpose
ORP Sensing TypePlatinum