Bluelab Product Documents
Bluelab OnePen pH/EC/Temp MeterThe Bluelab OnePen - Advanced technology for all growers!
This 3-in-1 tool measures pH, Conductivity (EC/PPM), and Temperature, optimising nutrient uptake. Connect to the Edenic app via Bluetooth for real-time sharing, updates, and comprehensive data management.
- Replaceable probe and probe health indicator
- Ergonomic build and high-contrast backlit display
- Precise readings with 0.01 pH resolution
- Simultaneous pH and conductivity (EC) screen readings
- Measure conductivity in EC, CF, PPM 500 (TDS) or PPM 700
- Measure temperature in ˚C or ˚F
- IP68 dust and waterproof rated
When connected to Edenic
- View measurements remotely through the app or browser
- Real-time data sharing and software updates
Master the art of plant health with precision
Optimise nutrient uptake for thriving plants - Introducing the Bluelab OnePen, the new all-in-one solution to measure pH, Conductivity (EC), and Temperature, ensuring you give your plants the nutrient balance they need.
While Electrical Conductivity (EC) indicates the total amount of nutrients in your solution, pH (potential Hydrogen) shows how acidic or alkaline your solution is, which determines nutrient absorption. Temperature affects your plants’ growth rate and structure.
By closely monitoring these vital parameters, you can optimise nutrient uptake, reducing waste and maximising plant quality and yield. Whether you're checking hydroponic nutrient solutions, runoff, or your water source; accurate readings are just a click away.
Advanced connectivity and data management
Unlock the full potential of data with the Edenic app - Connect your Bluelab OnePen to the Edenic app via Bluetooth for real-time sharing, updates, and comprehensive data management. Record, store, categorise and share your measurements in one easy-to-use app.
The Edenic app provides a complete solution for managing your growing environment from on-site or overseas. Real-time monitoring, control, alerts, and insights directly on your phone empower you to oversee your growing space from anywhere, anytime you choose. This app allows remote control of connected Bluelab devices, offering real-time data, customisable reports, and alerts for optimal plant growth, ensuring efficient crop management and peace of mind. Learn more at Edenic.io.
Superior durability and easy maintenance
Developed and built in New Zealand for growers - The double-junction pH probe, titanium electrodes, and IP68 dust and water proof rating ensure durability, while the replaceable probe and health indicator simplify maintenance for long-lasting performance.
This pen's ergonomic build and high-contrast backlit display also feature simultaneous pH and Conductivity (EC) readings for a seamless user experience. Get fast, precise readings down to 2 decimals with the Bluelab OnePen. This reliable information empowers growers to make confident decisions, saving you time and ensuring optimal plant growth.
Bluelab OnePen Contents:
- 1x Bluelab OnePen with Replaceable pH, Conductivity (EC) and Temperature Probe
- 3x 18ml / 0.6 fl.oz Bluelab Solution Sachets, 1 each of: pH 7.0, pH 4.0, KCl Storage Solution
- 1x Bluelab Sensor Cleaning Brush
- 2x AAA Batteries
- User Manual
Bluelab OnePen Warranty:
2-YEAR LIMITED WRITTEN WARRANTY
2-Year limited warranty for the Bluelab OnePen; 6-months for the Bluelab OnePen Replacement Probe. Proof of purchase required. For full terms and conditions visit bluelab.com/product-warranty
Bluelab OnePen Specs:
| pH | Conductivity | Temperature | |
|---|---|---|---|
| Units | pH | EC, CF, ppm 500 (TDS), ppm 700, mS/cm | °C, °F |
| Measurement Range | 0.0 – 14.0 pH | 0 - 10.0 EC, 0 - 100 CF, 0 - 5000 ppm 500 (TDS), 0 - 7000 ppm (ECx700), 0 – 10.0 mS/cm | 0 - 50 °C, 32 - 122 °F |
| Resolution | 0.01 pH | 0.01 EC, 0.1 CF, 10 ppm 500 (TDS), 10 ppm 700, 0.01 mS/cm | 0.1 |
| Accuracy at 25°C/77°F | ±0.05 pH | ±0.1 EC, ±1 CF, ±50 ppm 500 (TDS), ±70 ppm 700, ±0.1 mS/cm | ±1 |
| Temperature Compensation | Yes | Yes | n/a |
| Operating Environment | 0 – 50 °C / 32 – 122°F (Do not use or store outside of this temperature range), IP68 water and dust ingress rated | ||
| Power Source | 2 x AAA Alkaline Batteries | ||
| Certifications | CE, FCC, IC, UKCA. Contains Bluetooth Module IC: 8017A-MDBT50Q, FCC ID: SH6MDBT50Q | ||
| Signal Range | Indoor / Urban: 10 meters / 33 feet; Outdoor: 10 meters / 33 feet | ||
| Radio Signals | Bluetooth: 5 (Low Energy) | ||
| System Requirements (Edenic) | Android (8.0 or later) or iOS (12 or later) | ||
| Brand | Bluelab |
|---|---|
| SKU | PENONE |
| Weight (lb.) | 0.5000 |
| Height (in.) | |
| Prop 65 | false |
| Lead Time | Ships in 2-3 Business days |
| Length (in.) | |
| Width (in.) | |
| Warranty | 2 Year Limited; 6 Months for Replacment Probe |
| Hazardous Material | false |
| ETL Listed | No |
| UL Listed | No |
Bluelab OnePen pH/EC/Temp Meter Questions & Answers
Q: My Bluelab OnePen product won’t calibrate, what should I do?
A: The first step is to make sure the glass bulb of the probe is both well hydrated and clean. See sections 3.1 and 3.2 If, after both hydrating and cleaning, your OnePen still won’t calibrate, the replacement probe may be at the end of its life. Please reach out to our support team if you have further questions.
Q: My pH reading is stuck on 7 pH, what should I do?
A: Inspect the glassware for damage. If the pen reading is stuck on 7 pH (or close to that), it is likely the glassware is damaged. The replacement probe likely needs replacing.
Q: My pH probe has accidentally dried out, what should I do?
A: The probe must be rehydrated for 24 hours in KCI storage solution (never use RO, distilled or de-ionised water). Rinse the probe in fresh tap water add fresh KCl Storage Solution to the sponge in the storage cap before replacing the cap. Leave for 24 hours before calibrating the probe to two points following the calibration instruction in section 2.5 of this guide.
Q: There is a salt crust on my probe – why?
A: Both the pH probe and the storage cap contain KCl (Potassium Chloride) solution. The result of a small level of evaporation of KCl is the formation of a salt crust as KCl is a type of salt. This salt crust is normal and will not harm the probe or meter. Gently wash the salt off under fresh running water. It is essential to ensure that your probe always has sufficient KCl in the storage cap to remain hydrated.
Q: How long will my Bluelab OnePen Replacement Probe last?
A: Bluelab's pH products are charged with reference material which expends over time and use. The average life span of a OnePen Replacement Probe is approximately 18 months. Good care will help to maintain your pen. Follow our instructions to proper hydration, and regular cleaning, sections 3.1 and 3.2 in this guide. The OnePen probe has a 6-month warranty so if you encounter any issues with your current unit, please feel free to reach out to us for support.
Q: What is KCl Storage Solution?
A: Our Bluelab pH Probe KCl (Potassium Chloride) Storage Solution is a storage solution designed specifically for use with Bluelab Replacement Probes or pH Probes. Storage solution is used to ensure a pH probe is kept in ideal conditions during storage, while the probe is not in use.
Q: My Bluelab OnePen won’t pair with Edenic?
A: Make sure you have Bluetooth switched on, on your mobile device. Ensure permission for Edenic to use Bluetooth has been allowed. Confirm that your OnePen is not currently paired with another mobile device, the Bluetooth icon should be flashing. When pairing make sure both OnePen and mobile device are within 10 meters of each another and the OnePen is turned on.