FC911B

Description

The FC911B is a PVDF body, double junction pH electrode that has a BNC connector. This electrode features a single ceramic junction with refillable electrolyte, a sensing bulb made of general purpose glass, and a spherical tip shape.This design consideration is ideal for pH measurements in samples such as creams, fruit juices, and sauces. The recommended operating temperature range is from -5 to 80°C.

•  Durable PVDF Body
•  Double Junction Reference
•  Refillable Electrode

  The FC911B uses general purpose (GP) glass, spherical bulb, food grade PVDF body, single ceramic frit, double junction and is refillable with 3.5M KCl.
General Purpose Glass Formulation
•  General Purpose (GP) glass, as the name implies, is a standard glass formulation that is used for general use.
•  A pH electrode with GP glass will have a resistance of 100 megaohms at 25°C and is suited for measuring pH of samples that are at ambient temperatures.
•  The FC911B is suitable to use with samples that measure from -5 to 80°C.

  Spherical Bulb
•  The spherical bulb is for general purpose use within the food industry.
•  Measurements can be made in liquids or slurries that allow easy measurement of solid and semi-solid food products.
•  Other tip shapes include conic for penetration and flat tip for surface measurements.

  PVDF Body
•  Polyvinylidene fluoride (PVDF) is a food grade plastic that is resistant to most chemicals and solvents, including sodium hypochlorite.
•  It has high abrasion resistance, mechanical strength and resistance to ultraviolet and nuclear radiation.
•  PVDF is also resistant to fungal growth.

  Single Ceramic Double Junction Reference
•  The FC911B 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 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 FC911B is a refillable probe.
•  Since it is a double junction 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.

  BNC Connector
•  The FC911B uses a BNC connector.
•  This type of connector is universal in that it can be used on any pH meter that has the female BNC probe input.
•  Other type of connectors include DIN, screw type, T-type, and 3.5mm to name a few.
•  These types of connectors tend to be proprietary for a particular type of meter and are not interchangeable.

     SPECIFICATIONS