Spare pH Probe for Testo 205 with Gel Cap

This is the genuine spare pH probe for your Testo 205 pH/temperature measuring instrument, designed to keep your readings accurate on the job. When you're dealing with critical water quality or process control, a reliable pH sensor is non-negotiable for consistent results, especially under tough Australian conditions.

Anyone who's had a pH probe dry out or get damaged knows how frustrating it is to get inconsistent readings, so having a spare on hand means less downtime and accurate data when it counts.

Best For

• HVAC and plumbing technicians checking condensate trays or cooling tower water.
• Service teams monitoring chemical treatment systems.
• Maintenance crews requiring accurate pH values for system optimisation.

Compatibility

This spare probe is designed specifically for the Testo 205 one-hand pH/temperature measuring instrument. If you're running a different model, check fittings and specs before ordering.

Features

• Easy Change Measuring Tip: Designed for quick and hassle-free replacement on your Testo 205.
• Gel Storage Cap Included: Helps maintain probe hydration and extend its lifespan when not in use.
• NTC Temperature Sensor: Integrated for accurate temperature compensation during pH measurements.
• Robust Construction: Suitable for routine use in demanding industrial or commercial settings.
• Fixed Cable Design: Ensures a secure, reliable connection to your instrument.

Technical Specifications

What's in the Box

• 1x Spare pH probe for Testo 205 (0650 2051)
• 1x Gel storage cap

Using It on the Job

1. Ensure your Testo 205 instrument is switched off before attempting any probe replacement.
2. Carefully unthread and remove the old pH probe from the instrument body.
3. Gently screw in the new spare pH probe until secure, but do not overtighten to avoid damage.
4. Remove the gel storage cap before first use, then calibrate the instrument according to Testo's instructions with appropriate buffer solutions.
5. Always re-cap the probe with the gel storage cap after use to prevent drying out and maintain accuracy for future measurements.

Limitations & Safety Notes

• This probe is only compatible with the Testo 205 pH/temperature measuring instrument.
• Avoid direct contact with highly corrosive substances unless explicitly specified by the manufacturer for pH probes.
• Ensure the gel storage cap is always used when the probe is not actively measuring to prevent sensor degradation and extend its lifespan.
• Follow all Australian standards and Safe Work guidance when handling chemicals or performing measurements.

Don't wait until your pH readings are jumping all over the place to replace your probe. Keep a spare on the van, and perform regular two-point calibrations to catch drift early. It'll save you a return trip.

Pair With

Pair with the Testo 205 pH/temperature measuring instrument itself, and pH buffer solutions for accurate calibration and maintenance.