pH & ORP Replacement Probe – 300cm BNC Cable | Aquarium Hydroponics
pH & ORP Replacement Probe – 300cm BNC Cable | Aquarium Hydroponics
pH & ORP Replacement Probe with 300cm BNC Cable
Upgrade your water quality testing setup with this precision pH & ORP Replacement Probe. Featuring a generous 300 cm (3-metre) cable and a universal BNC connector, it is compatible with virtually any pH meter or controller that uses a BNC interface — making it a seamless drop-in replacement for aquariums, hydroponics systems, swimming pools, laboratories, spas, and more.
Built-in Automatic Temperature Compensation (ATC, 0–50 °C) ensures fast, stable, and accurate readings every time, eliminating the need for manual corrections. The wide measuring range of 0.00–14.00 pH covers virtually every water-testing scenario, from highly acidic to strongly alkaline solutions.
Key Features
- Universal BNC Connector — fits most pH meters, ORP meters, and water-quality controllers with a BNC port
- 300 cm Cable — extra-long reach for deep tanks, large reservoirs, and fixed installations
- Automatic Temperature Compensation — delivers consistent readings across a 0–50 °C operating range
- Wide pH Range — measures 0.00–14.00 pH with a theoretical slope of ≥ 98.5 %
- ORP-Capable — combination electrode (indicator + silver-chloride reference) measures oxidation-reduction potential of aqueous solutions
- Rapid Response — stabilises in under 1 minute
- Versatile Applications — aquariums, fish tanks, hydroponics, irrigation, drinking water, kombucha brewing, pools, scientific research, wastewater, and industrial water testing
- ABS Construction — durable, chemical-resistant housing; 12 mm probe diameter
Specifications
| Measuring Range | 0.00 – 14.00 pH |
| Cable Length | 300 cm (approx.) |
| Connector | BNC |
| Probe Diameter | 12 mm |
| Zero Point | 7 ± 0.5 pH |
| Theoretical Slope | ≥ 98.5 % |
| Internal Resistance | ≤ 250 MΩ |
| Response Time | ≤ 1 minute |
| Operating Temperature | 0 – 60 °C |
| ATC Range | 0 – 50 °C |
| Material | ABS |
Package Contents
- 2 × PH-201 Electrodes
- 1 × pH 4.01 Buffer Solution
- 1 × pH 6.86 Buffer Solution
- 2 × pH ORP Buffers
Made in Mainland China.
Note: Actual colour may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement tolerances in the listed dimensions.
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Frequently Asked Questions
Q: Is this pH & ORP replacement probe compatible with my existing BNC meter?
A: Yes — the probe uses a standard BNC connector, which is compatible with the vast majority of pH meters, ORP meters, and water-quality controllers that accept a BNC interface. Simply unplug your old probe and connect this one for an instant upgrade.
Q: What applications is this probe suitable for?
A: This probe is designed for general water pH and ORP measurement across a wide range of applications, including aquariums, fish tanks, hydroponics setups, swimming pools, spas, irrigation systems, kombucha brewing, drinking water testing, scientific research, and industrial or wastewater monitoring.
Q: Does this probe include Automatic Temperature Compensation (ATC)?
A: Yes. The probe features built-in Automatic Temperature Compensation across a 0–50 °C range, so it automatically corrects readings for ambient temperature changes, ensuring accurate and stable results without manual adjustment.
Q: Why is the cable 300 cm long?
A: The extra-long 300 cm (3-metre) cable provides the flexibility needed for deep aquariums, large reservoirs, or permanently installed monitoring systems where the meter or controller is positioned at a distance from the water source.