--- title: Bluelab OnePen™, the new all-in-one solution from Bluelab description: 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, Connect to the Edenic app via Bluetooth for real-time sharing, updates, and comprehensive data management. image: https://resources.bluelab.com/hubfs/OnePen%20-%20Instagram%20Post%20%E2%80%93%202-1.png --- ![OnePen sitting in a tomato plant](https://resources.bluelab.com/hs-fs/hubfs/Mask%20Group%2023-1.png?width=888&height=1315&name=Mask%20Group%2023-1.png) ![OnePen sitting in a tomato plant](https://resources.bluelab.com/hs-fs/hubfs/Bg1-Aug-28-2024-09-45-21-2388-PM.png?width=1914&height=927&name=Bg1-Aug-28-2024-09-45-21-2388-PM.png) [![Bluelab OnePen logo](https://resources.bluelab.com/hubfs/Group%2075.svg) ](https://bluelab.com) [![Bluelab OnePen logo](https://resources.bluelab.com/hubfs/Group%20102.svg) ](https://bluelab.com) # Introducing the most advanced pH/EC pen in the universe [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ## Packed with technology designed to help you grow. - Simultaneous pH and conductivity (EC) screen readings - Measure conductivity in EC, CF, PPM 500 (TDS), or PPM 700 - IP68 dust and water resistant - Replaceable probe and health indicator - Precise readings with 0.01 pH resolution - Measure temperature in °C or °F - View readings remotely through the app or browser with Edenic - Ergonomic build and high-contrast backlit display ![Bluelab OnePen hovering](https://resources.bluelab.com/hs-fs/hubfs/Group%20103.png?width=150&height=383&name=Group%20103.png) ![Bluelab OnePen with features](https://resources.bluelab.com/hs-fs/hubfs/PenFeatures-4.png?width=640&height=686&name=PenFeatures-4.png) ![Aliens looking at the OnePen under water](https://resources.bluelab.com/hs-fs/hubfs/Mask%20Group%2022-1.png?width=888&height=1177&name=Mask%20Group%2022-1.png) ![bg](https://resources.bluelab.com/hs-fs/hubfs/bg.png?width=1918&height=943&name=bg.png) ### There's only OnePen in the universe that's certified IP68 waterproof. [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ## Ditch the pen and paper. Record, organise and share your measurements easily with a seamless Bluetooth connection to Edenic on your mobile device. [![Edenic logo, screenshot and App Store download links](https://resources.bluelab.com/hs-fs/hubfs/Group%20106-2.png?width=1103&height=1200&name=Group%20106-2.png) ](https://edenic.io) [![Edenic logo, screenshot and App Store download links](https://resources.bluelab.com/hs-fs/hubfs/EdenicBG-4.png?width=700&height=405&name=EdenicBG-4.png) ](https://edenic.io) ![Photo of Doug, a OnePen user](https://resources.bluelab.com/hs-fs/hubfs/Screenshot%202024-08-26%20at%203.16.24%20PM.png?width=186&height=186&name=Screenshot%202024-08-26%20at%203.16.24%20PM.png) ![5 star rating](https://resources.bluelab.com/hubfs/Group%20105-1.svg) "I can't say enough good things about the Bluelab OnePen™. It feels really well-made and sturdy, not like some flimsy gadgets. It's incredibly easy to use, yet it's packed with all the essential features. Pairing it with Edenic takes it to the next level, bringing all my irrigation data together seamlessly." ##### Doug Smith - Director Cultivation Systems, Natura ##### Doug Smith - Director Cultivation Systems, Natura ## Save money with a replaceable probe The replaceable probe is a game changer, not only saving you money but also helps reduce waste, making it the sustainable choice. The OnePen is the last pen you will need to buy! [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ![Person removing OnePen replaceable probe](https://resources.bluelab.com/hubfs/Mask%20Group%2014.png) ## Save time with quick and precise readings The unmatched accuracy and response time of the OnePen™ means you get all the information you need faster than ever. pH and EC on the display at the same time takes ease of use to a new level! [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ![Person holding OnePen inside reservoir tank ](https://resources.bluelab.com/hubfs/Mask%20Group%2015.png) ## Work smarter with OnePen™ and Edenic Connect your OnePen™ to the Bluelab Edenic app, easily capture and organise your data and start making confident decisions for your plants. Live screen mode makes the OnePen™ the most versatile pen in the universe! [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ![Person holding the OnePen and a phone with the Edenic app on the screen](https://resources.bluelab.com/hubfs/OnePen%20Edenic%20Shot.jpg) [![Bluelab logo](https://resources.bluelab.com/hubfs/Group%2049.svg) ](https://bluelab.com) Bluelab has been the trusted tool for growers committed to exceptional crops for generations. We empower you to master the art of growing with the insights needed to make informed decisions, whether you're a home grower or a commercial cultivator. ![OnePen inside a hemp plant](https://resources.bluelab.com/hs-fs/hubfs/Mask%20Group%2024.png?width=888&height=1374&name=Mask%20Group%2024.png) ![OnePen inside a hemp plant](https://resources.bluelab.com/hs-fs/hubfs/BG3-2.png?width=1918&height=927&name=BG3-2.png) ### Designed with all growers in mind. [ SHOP NOW ](https://bluelab.com/bluelab-one-pen) ### Available at all good grow stores or buy now directly from Bluelab. [ BUY NOW ](https://bluelab.com/bluelab-one-pen)