-17%Hot
Hydroponic Research - Stax Price range: £34.99 through £639.99 Inc VAT
Bluelab - EC Pen Original price was: £89.99.£79.99Current price is: £79.99. Inc VAT
Bluelab – OnePen
Original price was: £234.99.£194.99Current price is: £194.99. Inc VAT
The Bluelab OnePen is a 3-in-1 meter that measures pH, EC/PPM, and temperature with high precision. With Bluetooth connectivity, a replaceable probe, and IP68 waterproofing, it delivers accurate, reliable nutrient monitoring for any grow setup.
Description
Bluelab – OnePen
The Bluelab OnePen is a precise 3-in-1 meter that measures pH, conductivity (EC/PPM), and temperature. It gives growers complete control over nutrient uptake and, as a result, supports healthier and faster plant growth. The OnePen also offers accuracy down to two decimal places, allowing you to fine-tune your feeding routine with confidence.
The OnePen is built for reliability. It features a replaceable probe and a probe health indicator, which both help extend the lifespan of the device. In addition, its IP68 dustproof and waterproof rating means it can be safely submerged for up to 30 minutes. This makes it a great fit for demanding grow room environments.
You can read data directly from the meter. However, you can also connect it to the Edenic app via Bluetooth for real-time insights, automatic logging, and system updates. To keep your readings accurate, the OnePen includes pH 7, pH 4, and KCL storage solutions, along with a sensor cleaning brush.
Key Benefits:
3-in-1 measurement: pH, EC/PPM, and temperature
Precise readings with 0.01 pH resolution
Simultaneous pH and EC display for quicker adjustments
Replaceable probe for extended device life
Probe health indicator for consistent accuracy
Works with Edenic app for live data, updates, and logging
IP68 rated: fully dustproof and submersible
Measures conductivity in EC, CF, PPM 500 (TDS), PPM 700
Measures temperature in °C or °F
Includes pH7, pH4, KCL solution sachets + cleaning brush
How to Use:
Immerse the sensor fully into your nutrient solution.
Wait for the LED to stop flashing—this confirms the reading has stabilised.
View measurements directly on the screen or sync to the Edenic app for detailed tracking.
Rinse and clean the probe after use, and store properly with KCL solution to maintain accuracy.
Additional information
| Weight | 0.33 kg |
|---|---|
| Dimensions | 20.5 × 9.5 × 7.5 cm |
About brand
Bluelab is a global leader in precision measurement tools for growers who demand accuracy and consistency. Growers rely on Bluelab for high-quality pH meters, conductivity meters, and nutrient solution monitors that help maintain optimal conditions at every stage of plant development.
Bluelab designs and manufactures its products in New Zealand, focusing on durability, ease of use, and long-term reliability. As a result, growers can monitor and adjust their nutrient solutions with confidence. Whether you test pH, measure EC, or manage irrigation systems, these tools give you the accurate data needed to maximise plant health and crop performance.
Why Choose Bluelab?
- Accurate pH, EC, and conductivity meters for precise growing
- Durable, reliable, and easy-to-use instruments
- Helps monitor and manage nutrient solutions effectively
- Trusted by commercial and professional growers worldwide
- Supports improved plant health, growth, and yield
Popular Bluelab Products
- Bluelab pH Pen
A compact and reliable handheld pH meter, ideal for quick and accurate readings in nutrient solutions. Perfect for both beginners and experienced growers. - Bluelab Truncheon EC Meter
One of the most trusted EC meters in the industry, known for its durability and simplicity. Provides fast, accurate nutrient strength readings with no calibration required. - Bluelab Guardian Monitor Wi-Fi
A continuous monitoring system that tracks pH, EC, and temperature in real time. Ideal for growers who want full control over their nutrient solution and environment.
Frequently Asked Questions
Why is pH important when growing plants?
pH affects how well plants absorb nutrients. If the pH is too high or too low, plants cannot take in essential nutrients properly.
What is EC and why does it matter?
EC measures the strength of your nutrient solution. It helps growers ensure plants receive the correct amount of nutrients without overfeeding or underfeeding.
Do Bluelab meters need calibration?
Yes, most Bluelab pH meters require regular calibration to maintain accuracy. However, some products like the Truncheon EC Meter do not require calibration.
Are Bluelab products suitable for beginners?
Yes, Bluelab products are easy to use and suitable for beginners, while still offering the accuracy required by professional growers.
Shipping & Delivery
DELIVERY TIMEFRAME
We aim to process and dispatch all orders within 2 working days of being placed. Wherever possible, parcels are sent on a next working day service to ensure you receive them quickly and reliably.
When your order is dispatched, you will receive a confirmation email with tracking information so you can closely monitor your delivery every step of the way.
Please Note: Delivery times may slightly vary during busy periods, or due to courier service disruptions. Rest assured, we always do our best to get your order to you promptly.
