SG354/SG355 Glass-Body Flat Surface pH and ORP Electrodes


SG354/SG355 Glass-Body Flat Surface pH and ORP Electrodes

Parameters & Applications

Product Information

  • SG354/SG355 sensors feature a special high molarity reference design for stability, reliability and maximum service life in demanding pool and spa, or light industrial applications!
  • Designed for demanding applications with Double junction reference and salt ring for extended sensor lifetime
  • Choose from pH or ORP Sensors featuring robust flat membrane with self-cleaning action
  • Crystallite structure provides a visual indication, alerting you when it is time to order and have an on-hand replacement electrode, before it requires changing
  • Low Impedance flat glass for fast response time

The Sensorex SG354 and SG355 series flat pH glass body sensors offer a robust pH membrane to reduce breakage and the flat membrane offers self-cleaning action in flow. The high surface area, dirt repellent porous HDPE junction works well even in dirty applications. Double junction reference design slows down the contamination process to provides long sensor life. A salt ring in the double junction provides a visual indicator of electrode life. Connector options include S8 detachable head (requires ext. cable DIN-EL/X). Both the fixed cable with PG13.5 and the S8 version permit connection into mounting blocks with PG13.5 threads. All sensor versions are supplied with a plastic spacer and O-ring for sealing into the flow mounting block.


Sensorex knows you would rather be relaxing by the pool than worrying about maintaining your pH and ORP sensors. That’s why we developed the glass-body flat surface line of sensors. No more guessing if your sensors are working. With the SG354/SG355 electrode you’ll know when it’s time to replace your sensor. The salt crystal reference provides enhanced performance and provides a clear visual indication when the sensor’s reference fill is spent.

SKU: SG354CD, SG355CD, SG354CD-ORP-AU, SG355CD-ORP-AU Categories: , , , , ,


  • Diameter:  12 mm
    Length:  120 mm
    Reference:  Sealed, KCl/AgCl (with crystallite structure)
    Junction:  Double-junction
    Junction Material: HDPE
    Body Material:  Glass
    Temperature Range: 5 to 60°C (140°F)
    Pressure: 0 to 3.44 bar (50 psia)
    Connector: Available with 3m (10-ft) cable and PG13.5 fitting


Additional information

Weight 0.5 lbs
Dimensions 8 × 2 × 2 in



3m cable with PG13.5 fitting, S8

Complete Your System

FC75P and FC75C - Polypropylene Flow Cell Kit 3/4" (Tee and Gland Fitting)

Our FC75P Mounting Gland are an easy and economical means for mounting pH sensors for in-line applications.  Compatible with all 12mm…

Add to Cart | $17.12

Preparing chemical solutions?

Visit our pH calculator first.


Thumbs up