pH & ORP Probe 300cm BNC Cable – Auto Temperature Compensation

$138.27 $172.65

pH & ORP Replacement Probe with 300cm BNC Cable

Upgrade your water quality monitoring setup with this precision pH & ORP replacement probe. Featuring a generous 300 cm (3-metre) BNC cable and automatic temperature compensation (ATC) across 0–50°C, this electrode delivers fast, stable readings every time. Compatible with virtually any pH meter or controller equipped with a standard BNC connector, it's the versatile solution for aquariums, hydroponics, pools, laboratories, and beyond. Made in China.

Key Features

Wide Measurement Range: 0.00–14.00 pH — covers everything from acidic to alkaline solutions.
Automatic Temperature Compensation (ATC): Compensates across 0–50°C for consistently accurate readings without manual correction.
Universal BNC Connector: Plugs directly into any pH meter, controller, or analyzer using a standard BNC interface.
300 cm Cable Length: Extra-long cable gives you flexibility when monitoring tanks, reservoirs, or test stations.
Dual-Function Probe: Serves as both a pH electrode and an ORP (oxidation-reduction potential) probe using a silver chloride reference electrode.
Fast Response: Delivers a stable reading in under 1 minute.
High Slope Accuracy: Theoretical percentage slope ≥ 98.5% for reliable calibration performance.
Durable ABS Housing: Lightweight yet sturdy, suitable for regular lab and field use.

Ideal Applications

Aquariums & fish tanks
Hydroponics & irrigation systems
Swimming pools & spas
Kombucha & fermentation monitoring
Drinking water & wastewater testing
Scientific research & laboratory analysis

Full Specifications

Measuring Range	0.00 – 14.00 pH
Probe Diameter	12 mm
Zero Point	7 ± 0.5 pH
Theoretical Slope	≥ 98.5%
Internal Resistance	≤ 250 MΩ
Response Time	≤ 1 minute
ATC Range	0 – 50°C
Operating Temperature	0 – 60°C
Connector	BNC
Cable Length	300 cm (~3 metres)
Material	ABS

Package Contents

2 × pH-201 Electrodes
1 × pH 4.01 Buffer Solution
1 × pH 6.86 Buffer Solution
2 × pH ORP Buffers

Note: Slight colour variation may occur between product images and the actual item due to monitor settings and lighting conditions. Allow minor measurement tolerances in the data provided.

Frequently Asked Questions

Q: Is this pH ORP probe compatible with my existing BNC pH meter or controller?

A: Yes. This replacement probe features a standard BNC connector that is universally compatible with virtually all pH meters, ORP meters, and pH controllers that use a BNC interface. If your device has a BNC port, this probe will connect directly.

Q: What is automatic temperature compensation (ATC) and why does it matter?

A: Automatic Temperature Compensation (ATC) automatically adjusts pH readings based on the current water temperature (0–50°C range). This is important because temperature significantly affects electrode response — ATC ensures your pH readings remain accurate without manual correction, which is especially useful in aquariums, hydroponics systems, and outdoor pool testing.

Q: Can this probe measure ORP as well as pH?

A: Yes. This is a combination electrode that functions as both a pH electrode and an ORP (oxidation-reduction potential) probe. The silver chloride reference electrode makes it suitable for measuring the ORP of water and aqueous solutions using a compatible ORP meter.

Q: How should I store and maintain this pH electrode to extend its lifespan?

A: When not in use, keep the electrode tip immersed in a storage solution (typically pH 4.01 buffer or KCl solution) and avoid allowing the glass bulb to dry out. Rinse the probe with distilled water before and after each use. Regular calibration using the included pH 4.01 and 6.86 buffer solutions will ensure ongoing measurement accuracy.