{"product_id":"bluelab-onepen","title":"Bluelab OnePen – pH, EC \u0026 Temp Meter, Bluetooth","description":"\u003ch2\u003epH, EC and temperature together on one waterproof pen\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBluelab OnePen\u003c\/strong\u003e is a \u003cstrong\u003e3-in-1 handheld meter\u003c\/strong\u003e that reads \u003cstrong\u003epH, conductivity (EC) and temperature\u003c\/strong\u003e from a single dip, with a \u003cstrong\u003ereplaceable double-junction pH probe and titanium conductivity electrodes\u003c\/strong\u003e so the pen itself never needs replacing when the sensor wears out. It is \u003cstrong\u003eIP68 rated\u003c\/strong\u003e — fully dust and waterproof — and pairs over \u003cstrong\u003eBluetooth to the Edenic app\u003c\/strong\u003e, sending live readings to a phone for logging, trend tracking and remote viewing.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree readings from one probe\u003c\/strong\u003e: pH, conductivity (EC, mS\/cm, CF, ppm 500 or ppm 700) and temperature, shown together on a backlit display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable probe with a health indicator\u003c\/strong\u003e, so the pen itself lasts far longer than a sealed meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth to the Edenic app\u003c\/strong\u003e for real-time data, logging and remote monitoring from a phone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP68 waterproof\u003c\/strong\u003e — dust-tight and fully submersible, built for the reservoir edge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 2-point pH calibration\u003c\/strong\u003e with a probe-health prompt when recalibration is due\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.01 pH resolution\u003c\/strong\u003e for genuinely precise readings rather than a rough guide\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCarrying two pens because one only does half the job?\u003c\/h3\u003e\u003cp\u003eChecking pH and EC separately means two pens, two calibration routines and two things to remember at the reservoir. The OnePen folds both into one dip, and because the probe is replaceable rather than the whole meter, it is built to be the last pH\/EC pen a grower needs to buy.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrate pH\u003c\/strong\u003e using the supplied pH 7.0 and pH 4.0 single-use sachets before first use, 2-point calibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDip\u003c\/strong\u003e the probe fully into the nutrient solution or runoff and read pH, EC and temperature together on the display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect via Bluetooth\u003c\/strong\u003e to the Edenic app for live readings, logging and calibration reminders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean\u003c\/strong\u003e the probe with the supplied sensor cleaning brush and rinse after use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore\u003c\/strong\u003e the probe tip wet with the supplied KCl storage solution, never dry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace batteries\u003c\/strong\u003e (2x AAA) when the display dims\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e pH, conductivity (EC) and temperature simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 0.0-14.0, resolution 0.01, accuracy ±0.05 at 25°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 0-50°C (32-122°F), resolution 0.1, accuracy ±1°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductivity range:\u003c\/strong\u003e EC\/mS 0-10 (res 0.01, acc ±0.1) · CF 0-100 (res 0.1, acc ±1) · ppm 500 (TDS) 0-5000 (res 10, acc ±50) · ppm 700 0-7000 (res 10, acc ±70)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e replaceable double-junction pH probe with titanium conductivity electrodes, probe health indicator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Bluetooth to the Edenic app for live data, logging and alerts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e IP68 — dust-tight and waterproof\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 2x AAA alkaline battery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-year meter warranty, 6-month replacement probe warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox contents:\u003c\/strong\u003e OnePen with probe, sensor cleaning brush, pH 7.0 and pH 4.0 calibration sachets, KCl storage solution sachet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":53791348556042,"sku":"ENV-BLUE-001-01","price":189.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/bluelab-onepen-1.png?v=1790121297","url":"https:\/\/hydrocropshop.co.uk\/products\/bluelab-onepen","provider":"Hydro Crop Shop","version":"1.0","type":"link"}