AstralPool - pH Electrode with Calibration Solutions (Controller 3 Plus pH-Chlorine) - 36004

AstralPool – pH Electrode with Calibration Solutions (Controller 3 Plus pH-Chlorine)

This is the genuine AstralPool replacement pH electrode (SKU 36004), supplied complete with calibration solutions, for use with the AstralPool Controller 3 Plus pH-Chlorine automatic dosing and regulation system (ref. 57142). It is the OEM sensing element that the controller relies on to continuously and accurately measure pool water pH across the full 0–14 range. Replacing a worn or drifting electrode restores precise pH measurement, ensuring your dosing system dispenses chemicals correctly and keeps pool water safe and balanced.

Compatibility

This electrode is the designated spare part at position 22 in the official Fluidra exploded-view diagram for the Controller 3 Plus pH-Chlorine (parent unit ref. 57142). It is also compatible with AstralPool Control Basic equipment and Optima dosing pumps that share the same electrode interface. Always verify your unit’s reference number before ordering to ensure a correct fit.

Why Genuine Matters

A correctly calibrated pH probe is essential for the dosing controller to detect pH levels with maximum accuracy — an out-of-spec or counterfeit electrode can cause the system to over- or under-dose chemicals, with direct consequences for water quality and swimmer safety. This kit includes pH 4.0 and pH 7.0 buffer solutions plus an electrode washing solution, giving you everything needed for a full two-point calibration as described in the AstralPool Controller manual. Using genuine AstralPool parts also protects the warranty of your controller unit.

Installation & Calibration

Electrode replacement and calibration should be carried out with the controller in its manual-off or calibration mode, with the filter pump stopped and isolation valves closed to prevent water spillage. Immerse the electrode in the supplied buffer solutions in sequence (pH 7 first, then pH 4) and follow the calibration steps detailed in your Controller 3 Plus instruction manual. The controller’s built-in pump-pause function keeps the display active during the calibration process, making the procedure straightforward for a qualified pool technician.