{"product_id":"aqua-master-tools-p110-pro-2-combo-pen","title":"Aqua Master Tools P110 Pro 2 Combo Pen – pH \u0026 EC Meter","description":"\u003ch2\u003epH, EC and temperature from one waterproof pen that floats\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAqua Master Tools P110 Pro 2 Combo Pen\u003c\/strong\u003e measures \u003cstrong\u003epH, EC and temperature\u003c\/strong\u003e from a single replaceable electrode, so one dip tells you whether a nutrient solution is ready to feed. It is the upgraded version of Aqua Master's long-running P110: it now runs on standard \u003cstrong\u003eAAA batteries\u003c\/strong\u003e instead of button cells, has a black display with white characters that is easier to read in a dim grow room, and lets you choose \u003cstrong\u003eone or two decimal places\u003c\/strong\u003e. It reads pH from \u003cstrong\u003e0.1 to 14.00\u003c\/strong\u003e and EC from \u003cstrong\u003e0.0 to 19.99 mS\/cm\u003c\/strong\u003e, with \u003cstrong\u003eautomatic temperature compensation\u003c\/strong\u003e from 0 to 50°C, so a cold tap-water mix and a warm reservoir give comparable results. The housing is \u003cstrong\u003eIP67 waterproof and floats\u003c\/strong\u003e, the electrode is designed for \u003cstrong\u003edry storage\u003c\/strong\u003e, and a calibration indicator reminds you to recalibrate 30 days after the last successful calibration.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree readings, one pen\u003c\/strong\u003e – pH, EC and temperature from a single electrode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution to 0.01\u003c\/strong\u003e – switch pH and EC between one and two decimal places\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67 and floats\u003c\/strong\u003e – a pen dropped in the tank stays on the surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry-storage, replaceable electrode\u003c\/strong\u003e – no storage solution to keep topped up, and a worn probe is swapped rather than the whole meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAAA batteries\u003c\/strong\u003e – standard cells, included, with a battery indicator and auto power-off after \u003cstrong\u003e8 minutes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30-day calibration reminder\u003c\/strong\u003e – the indicator shows when it is time to recalibrate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFeeding Blind: When pH and EC Are Off\u003c\/h3\u003e\u003cp\u003eMost feeding problems start in the mixing bucket. An EC that is too strong burns leaf tips and stalls growth; too weak and plants go hungry; and a pH outside the range for your medium locks nutrients out even when they are in the solution, showing up as yellowing, spotting and \u003cstrong\u003epoor nutrient uptake\u003c\/strong\u003e. Measuring both before every feed, and checking run-off now and then, is the simplest way to keep plants on track in soil, coco or hydro.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBefore first use:\u003c\/strong\u003e soak the electrode in tap water for at least 12 hours. Dried salts around the pH electrode are normal and dissolve away.\u003c\/li\u003e\n\u003cli\u003eRemove the cap, rinse the electrode with distilled water and switch the pen on.\u003c\/li\u003e\n\u003cli\u003eStand it upright in the solution up to the edge of the electrode housing, stir gently and wait a few seconds for the reading to settle.\u003c\/li\u003e\n\u003cli\u003ePress \u003cstrong\u003eMODE\u003c\/strong\u003e to switch between pH and EC; the \u003cstrong\u003eTEMP\/CAL\u003c\/strong\u003e button changes the temperature unit and is used for calibration.\u003c\/li\u003e\n\u003cli\u003eRinse the electrode after use, let it dry, refit the cap and switch off; the pen also powers itself off after 8 minutes.\u003c\/li\u003e\n\u003cli\u003eCalibrate pH with \u003cstrong\u003e4.0 and 7.0\u003c\/strong\u003e buffers (automatic two-point) and EC manually against an EC calibration solution, with the solution at about \u003cstrong\u003e25°C\u003c\/strong\u003e.\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, EC and temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e pH 0.1–14.00; EC 0.0–19.99 mS\/cm; temperature 0–50°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e pH 0.01 or 0.1; EC 0.01 or 0.1 mS\/cm; temperature 0.1°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e pH ±0.1; EC ±2% F.S.; temperature ±0.5°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature compensation:\u003c\/strong\u003e automatic, 0–50°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e pH 2-point automatic at 4.0 and 7.0; EC manual, with any EC calibration solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration indicator:\u003c\/strong\u003e clears after a successful calibration and returns after 30 days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrode:\u003c\/strong\u003e replaceable, dry storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 2 x 1.5V AAA batteries (included); battery indicator; auto power-off after 8 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproofing:\u003c\/strong\u003e IP67, floats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 132 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 year on the meter, 6 months on the electrode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 23 x 4.3 x 4.3 cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhat is different from the original P110 Pro?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eThe Pro 2 runs on AAA batteries rather than button cells, has a black display with white characters, lets you choose one or two decimal places and reminds you to recalibrate after 30 days. It still reads pH, EC and temperature from one replaceable electrode.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eDoes the electrode need to be kept in storage solution?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. It is a dry-storage electrode: rinse it after use, let it dry and refit the cap. Before its first use, soak it in tap water for at least 12 hours to activate it.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhich calibration solutions do I need?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003epH 4.0 and pH 7.0 buffers for the automatic two-point pH calibration. EC is calibrated manually, so any EC calibration solution within the meter's range can be used.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I read PPM with it?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIt displays EC in mS\/cm. To convert to PPM, multiply the reading by 500 or 700, depending on which scale your feed chart uses.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/aqua-master-tools-ph-calibration-solution\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/aqua-master-tools-ph-calibration-solution.jpg?v=1787263877\u0026amp;width=160\" alt=\"Aqua Master Tools pH Calibration Solution\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eAqua Master Tools pH Calibration Solution\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003epH 4.01 and 7.00 buffers for the two-point calibration\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/bluelab-ec-277-solution-sachets\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/bluelab-ec-277-solution-sachets-1.png?v=1790169268\u0026amp;width=160\" alt=\"Bluelab 2.77 EC Solution Sachets\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eBluelab 2.77 EC Solution Sachets\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAn EC standard for the manual EC calibration\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/growth-technology-ph-down-30\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/growth-technology-ph-down-30.png?v=1787262241\u0026amp;width=160\" alt=\"Growth Technology pH Down 30%\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eGrowth Technology pH Down 30%\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eBring a high-pH feed back into range\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":53931041128714,"sku":"TLS-AQMA-014-01","price":68.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/aqua-master-tools-p110-pro-2-combo-pen-default-title-1.jpg?v=1793055062","url":"https:\/\/hydrocropshop.co.uk\/products\/aqua-master-tools-p110-pro-2-combo-pen","provider":"Hydro Crop Shop","version":"1.0","type":"link"}