HI11313

Description

The HI11313 is a glass body, refillable, double junction pH electrode that has a built-in temperature sensor and connects to the meter with a quick connect DIN connector. This type of connector is proprietary to specific meters such as the HI98190. This electrode has a single ceramic junction in the outer reference cell and the spherical pH sensing portion is made with high temperature glass. This design consideration is ideal for general purpose use.

•  Double Junction Design
•  High Temperature (HT) Glass
•  Refillable Electrode

  The HI11313 uses high temperature (HT) glass, spherical bulb, glass body, single ceramic frit, double junction and is refillable with 3.5M KCl.
High Temperature Glass Formulation
•  The measurement of pH at very high temperatures is detrimental to the sensitive glass bulb and will shorten the life of it.
•  A pH electrode with general purpose (GP) glass will have a resistance of 100 megaohms at 25^oC while the resistance of HT glass is around 400 megaohms at 25^oC.
•  As the HI11313 is used at elevated temperatures the resistance decreases to approach the that of GP glass.
•  The HI11313 is suitable to use with samples that are between 0 to 100^°C.

  Spherical Bulb
•  The spherical bulb is for general purpose use.
•  Other tip shapes include conic for penetration and flat tip for surface measurements.

  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 electrode reaches equilibrium, the steadier the reference potential.

  Single Ceramic Double Junction Reference
•  The HI11313 is a double junction design. pH electrodes are available as single junction or double junction.
•  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 reference has a single ceramic frit.
•  The ceramic is a porous material that is easily fused with the glass body and has a similar expansion coefficient.
•  A single ceramic junction has a flow rate of 15-20 μL/hour.
•  Other junction types are available with higher flow rates and made with different materials.

  Refillable
•  The HI11313 is a refillable probe.
•  Since it is a double junction combination ph electrode the fill solution is the HI7082 3.5M KCl.
•  This solution does not contain any silver as with single junction electrode.
•  The absence of silver will prevent any silver precipitate from forming at the junction surface and clogging it.
•  Clogging of the junction will result in drifty and erratic readings.

  Quick Connect DIN Connector
•  The HI11313 uses a Quick Connect DIN connector that makes attaching and removing the probe simple and easy.
•  This type of connector is proprietary to the meter. See specifications table for compatible meters.

     SPECIFICATIONS