General Use Plastic and Glass pH and Reference Electrodes

Item No.: 

S900C, S100C,  S120C, S700C, S300C, S301C, S300CD, S200C, S201C, S200CD, S350CD, S450C, S450CD;

S700G, SG200G, S200G;

SG900C, SG901C,  SG701C, SG300C, SG301C, SG300CD, SG200C, SG201C, SG200CD, SG360CD;

S700R, S700RD, SG200R, SG200RD, SG201R, SG201RD, S200R, S201R, S200RD, S201RD

pH and Reference Electrodes Features
• Fast­­­­­­ - 95 % response in less than one second (bulb-type only)
• Combination or half cell designs
• Single or double junction construction
• Choose between sealed and re-fillable models
• Choose between glass and plastic body models

pH and Reference Electrodes Description
Combination or Separate Electrodes? 

Sensorex makes both separate and combination electrodes. The convenience of handling one combination electrode as compared to using separate pH and reference electrodes has been well established in laboratory and portable pH measurements. The price of Sensorex combination electrodes is much less than the total price of the separate electrodes. Individual half cell electrodes are used only for special purposes.

Glass or Plastic Body Electrodes? 

Sensorex makes both body types and both provide the identical excellent pH measurement. Traditionally, pH electrodes have been made of all glass construction, but today’s plastics allow pH electrodes to be constructed with sturdy and chemically resistant epoxy or premium ULTEM bodies. The recessed protected design of the Sensorex plastic body electrodes extends over the measuring surface, ensuring that the pH glass bulb is virtually unbreakable.

Single or Double Junction Reference?
Most pH measurements can be made with single junction reference electrodes. However, materials such as heavy metals, proteins and sulfides can precipitate at the junction. Double junction designs use a buffering salt such as KNO3 in the lower chamber contacting the sample, and preventing these reactions. They are also useful for pH measurement of tris buffers. Both combination or separate reference electrodes are available from Sensorex. 

pH and Reference Electrodes Specifications