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The Aqua Master Tools P50 Pro is a waterproof IP67 digital pH meter with replaceable electrode. It measures pH and temperature accurately with ATC and auto-calibration, perfect for hydroponics and nutrient solution testing.
The Aqua Master Tools P50 Pro pH Temp Meter is an advanced, digital pH tester engineered for professionals and serious hydroponics growers who demand ultimate accuracy and resilience. This robust, dual-function meter provides precise, simultaneous readings of your nutrient solution's pH and temperature, which are critical parameters for achieving high yields. Since pH levels are crucial for hydroponic success, the P50 Pro ensures superior control, featuring a tough, IP67 waterproof body and the cost-saving benefit of a replaceable electrode.
Key Benefits of the Aqua Master Tools P50 Pro
- Dual Parameter Precision: Delivers highly accurate measurements for both pH (0.0 to 14.0) and water temperature (°C/°F), essential for maintaining optimal nutrient uptake.
- Replaceable Electrode: Unlike many pocket testers, the P50 Pro features a replaceable probe, significantly extending the lifespan of the meter and offering long-term value.
- Ultimate Durability: With a robust IP67 waterproof rating, the meter is completely protected from dust and can be fully submerged, even floating if accidentally dropped into the reservoir.
- Automated Accuracy: Utilises 2-point auto-calibration (pH 4.0 and pH 7.0) and Automatic Temperature Compensation (ATC) to guarantee reliable, error-free readings every time.
- User-Friendly Design: Features a large, clear digital display and simple push-button operation, making daily checks in the grow room fast and efficient.
How to Use the Aqua Master Tools P50 Pro
Follow these steps for accurate measurements and to maintain the longevity of your P50 Pro pH Meter:
- Preparation (First Use): Before initial use, remove the protective cap and soak the electrode upright in clean tap water for 12 hours to properly hydrate the sensor.
- Calibration: Perform the 2-point calibration monthly or when the calibration indicator suggests. Insert the meter into a pH 7.0 buffer solution, press and hold the 'CAL' button, and repeat the process with a pH 4.0 buffer solution.
- Measurement: Turn the meter on. Gently clean the electrode with distilled water and dry it off. Insert the meter upright into the liquid sample (e.g., your hydroponic tank) and gently stir. Wait a few seconds for the stable pH and temperature value to display.
- Cleaning & Storage: Rinse the electrode with clean water after use. Store the meter upright with a few drops of KCl Storage Solution in the protective cap to ensure the glass bulb remains hydrated.
pH Management Guide: To truly understand the necessity of this meter have a read of our blog post: Why pH Levels Are Crucial for Hydroponic Success.
Grow Room Guide: For broader advice on setting up your environment, see 5 Essential Tips for Setting Up a Hydroponics Grow Room.
Frequently Asked Questions
How long should I soak the P50 Pro before the first use?
Aqua Master Tools recommends soaking the electrode tip in clean tap water for a minimum of 12 hours prior to the very first use. This properly hydrates the glass sensor, ensuring the meter is primed to deliver accurate pH readings.Why is the replaceable electrode a major benefit for growers?
The replaceable electrode on the P50 Pro significantly increases the meter's lifespan. Since pH electrodes naturally degrade over time, replacing only the sensor, rather than the entire unit, is a more cost-effective and sustainable solution for long-term water quality monitoring.Does the P50 Pro require KCl storage solution for storage?
Yes, while the meter is robust, all glass pH electrodes must be stored in a specialised KCl storage solution (Potassium Chloride) to maintain the integrity of the sensor's internal electrolyte and prevent it from drying out, which guarantees long-term accuracy. Find the storage solution and more in the pH Management section.What does the IP67 waterproof rating mean for growers?
The IP67 rating means the P50 Pro is completely dust-tight and can withstand immersion in water up to 1 metre deep for 30 minutes. Practically, this means it is protected against accidental drops into your hydroponic reservoir and can be easily washed without damage.SKU: 1736Range
pH: 0.0 ~ 14.0 pH
Temp.: 0°C ~ 50°C (32°F ~ 122°F)Resolution
pH: ± 0.1 pH
Temp.: 0.1 ºC (1.0 ºF)Accuracy
pH: ± 0.1 pH
Temp.: ±0.5°C (32°F)
Temp. compensation: 0°C - 50°C (32°F - 122°F)Calibration: pH: 2 point auto 4.0 - 7.0 pH
Features: Battery indicator & automatic temp. compensation
Power supply: 3 × 1.5 Volt AG-13 button cell battery (included)
Auto. power off: After 8 minutes
Calibration indicator: With correct calibration
Waterproof: IP67
Dimensions: 220 x 40 x 40 mm
Weight: 102 gramsFree delivery on orders over £60*
- UK Mainland onlyStandard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland onlyExpress Delivery £8.95*
- Next Working Day**
- UK Mainland onlyScottish Highlands £15.95*
- 2-5 Days***Can not be used with Heavy / Large items
**If ordered on a working day before 2pm cut off (Saturday and Sunday are not classed as working days).Please See Delivery and Returns page for more details.