Ionode pH at a glance ...

The Ionode range of pH sensors has been designed to truly excel in the most common application and installation types such as swimming pools, water treatment, education, mining, environmental, food and beverage, agriculture and many more. But it's the more challenging and contaminated applications such as waste water, soil, meat, electro-plating and chemical processing where Ionode pH sensors have developed a reputation for precision, value for money and unequalled life span. Underpinning this reliability and performance is a proprietary method of automated glass blowing which provides precise, uniform glass membranes which are tough enough to withstand the 'drop-test' without sacrificing any speed or accuracy. To complete the exceptional value for money equation, Ionode's unique renewable junction defeats pollutants by protecting the primary junction from contamination and providing an easily renewable secondary junction to extend the life of the sensor.

Ionode have general purpose sensors which excel in the most challenging environments such as immersion, submersion, high temperature, high pressure, solvent and chemical resistance and other challenging environments, but don't be fooled into thinking that general purpose means average performance as our standard range features the toughest sensor we’ve ever made - the IJ-44.

Click here for an in depth explination of pH Theory.

IJ Series
Best choice for difficult or contaminated samples.
Suited to almost any application including food, beverage & penetration.
Renewable intermediate junction
Premium performance
Super long life
Heavy-duty favourite
Multiple variants
IH Series
Recommended for routine measurements, hydroponics, pools, education etc.
Sealed gel/double junction
Exceptional value
Long life
Used in hundreds of industries
Multiple variants

ECO Series
Best budget choice for routine measurements, pools, students etc.
Sealed gel/Single junction
Economical pricing
Robust and reliable
Chemical resistant body
Multiple variants

P Series
Best budget choice for routine laboratory measurements, education etc.
Single junction
Budget pricing
Robust and reliable
Free flowing junction

Pool and water treatment sensors
Australia’s largest pool sensor manufacturer
Multi parameter sensors
Direct replacement for competitor sensors
Custom built and white label options

IJ Series pH Sensors  Renewable Intermediate Junction

Developed to overcome and defeat contamination, Ionode’s flagship IJ Series works where other sensors simply do not. The preferred choice in food, dairy, beverage, waste water, industrial, mining, electro-platting, petro-chemical and dozens more challenging environments, the IJ Series redefines versatility and long life and is also the right choice for non-aqueous measurements and titrations. Featuring a renewable junction for easy maintenance, user selectable electrolyte and available with bulb, spear or flat membranes, the IJ Series is unequalled by any other sensor for performance, versatility and life span.
Learn More about the IJ Series
reference electrode

IH Series pH Sensors  Sealed Gel/Double Junction

Ionode’s renowned IH Series provides outstanding performance and long life in both routine and difficult samples with moderate to high ionic strength. Used extensively in countless diverse industies such as aquaculture, hydroponics, pools and spas, water and waste water treatment, laboratory, environmental, education and more. Built tough to outperform and outlast.

BT Series pH Sensors  Bluetooth Enabled

Using Ionode's range of pH sensors for long life and reliability, your smartphone can now become a full-function pH meter. Available in three flexible options, the BT smart phone app digitally records and stores test results, exports and shares data and records location information in one simple GLP interface. Choose from the budget priced ECO-BT for routine samples, the premium IJ-40-BT for more challenging samples and, the IJ-44-BTH for premium performance in high temperature and direct penetration applications. All three kits come in a rugged carry case.

Inline Sensors for Pool & Water Treatment  Combined Sensors/Screw-in/Integrated

Whether in swimming pools, process control or other inline applications, reliability is everything and Ionode’s reputation for robust and reliable sensors has been well documented since 1972. Ionode offers multi-parameter sensors with up to four parameters in one sensor, direct replacement models for other brands and a custom sensor service to build to your own specifications ... all with reliability beyond the norms of other manufacturers.

ECO Series pH Sensors  Sealed Gel/Single Junction

Developed to provide the budget-conscious user with renowned Ionode performance at the right price, the ECO Series delivers long-life, low maintenance and Ionode’s fast and toughened glass formula suited for use in both field and laboratory applications. Ionode quality on a budget.

P Series pH Sensors  Single Junction/Refillable

Ionode’s P Series sensors are ideal for educational and laboratory applications where easy refilling and fast, accurate results are required.

The pH Range


Body Material

Measuring Range

Temp. Range

Sensor Type

Temperature Compensation

pH 0 - 14
0 - 60
A glass spear
IJ-44-HT-Spear PVDF (Kynar) pH 0 - 14 0 - 100 A glass spear Optional
IJ-40 Polypropylene pH 0 - 14 0 - 60 A glass bullet Optional
IJ-40-ALK Polypropylene pH 0 - 14 0 - 60 C Glass bullet Optional
IJ-40-HT-ALK PVDF (Kynar) pH 0 - 14 0 - 100 C Glass bullet Optional
pH 0 - 14
0 - 60
A glass flat
pH 0 - 14
0 - 60
A glass bulb
pH 0 - 14
0 - 60
A glass bulb
pH 0 - 14
0 - 60
C glass bulb
pH 0 - 14
0 - 60
A glass bullet