{"product_id":"vivosun-aerolab-p30-ph-pen","title":"VIVOSUN AeroLab P30 pH Pen – pH Tester for Hydroponics","description":"\u003ch2\u003eLab-Grade pH Readings in a Pocket Pen\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eVIVOSUN AeroLab P30 pH Pen\u003c\/strong\u003e gives fast, stable pH readings to \u003cstrong\u003e±0.01 pH\u003c\/strong\u003e across the full \u003cstrong\u003e0.00–14.00\u003c\/strong\u003e range, with \u003cstrong\u003eautomatic temperature compensation (ATC)\u003c\/strong\u003e so readings hold steady as your nutrient solution warms or cools. It suits \u003cstrong\u003ehydroponic reservoirs, DWC, NFT, drip and ebb-and-flow systems\u003c\/strong\u003e, as well as aquariums and general water testing.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e±0.01 pH accuracy\u003c\/strong\u003e from a high-sensitivity, double-junction glass electrode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-touch auto calibration\u003c\/strong\u003e at 1, 2 or 3 points, recognising both NIST (4.01\/6.86\/9.18) and USA (4.00\/7.00\/10.01) buffers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable probe\u003c\/strong\u003e – swap the electrode instead of replacing the whole meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67 waterproof and floats\u003c\/strong\u003e, so a drop in the tank is not the end of it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit LCD with auto and manual hold\u003c\/strong\u003e – lock a reading and read it out of the water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable auto power-off\u003c\/strong\u003e to save battery life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Is My pH Drifting?\u003c\/h3\u003e\u003cp\u003eNutrient uptake is only reliable inside a narrow pH window, and a solution that drifts even half a point can lock out calcium, magnesium or iron long before leaves show it. A cheap pen that wanders between readings makes that impossible to catch. A calibrated, temperature-compensated meter lets you dose pH up or down with confidence and keep the root zone in range.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrate first:\u003c\/strong\u003e mix a buffer sachet into 250ml of distilled water, press and hold \u003cstrong\u003eCAL\u003c\/strong\u003e and the pen confirms each point automatically\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest:\u003c\/strong\u003e remove the cap, dip the probe into the solution and wait for the reading to settle, or press \u003cstrong\u003eHOLD\u003c\/strong\u003e to lock it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse and store:\u003c\/strong\u003e rinse the probe after use and keep the cap on with the moist sponge in place so the electrode stays hydrated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecalibrate\u003c\/strong\u003e regularly, and whenever readings look unstable\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\u003eModel:\u003c\/strong\u003e VSE-ALP30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 0.00–14.00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±0.01 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 0–50°C (32–122°F), with ATC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 1, 2 or 3 point automatic, NIST and USA buffers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e replaceable double-junction pH electrode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e IP67, floats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e backlit LCD, auto and manual hold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 4 × AAA batteries (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and weight:\u003c\/strong\u003e approx. 19cm long, 118g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e pH pen, calibration buffer sachets, measuring cup, batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"VIVOSUN","offers":[{"title":"Default Title","offer_id":53816136696074,"sku":"TLS-VIVO-005-01","price":69.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/vivosun-aerolab-p30-ph-pen-1.jpg?v=1790365254","url":"https:\/\/hydrocropshop.co.uk\/products\/vivosun-aerolab-p30-ph-pen","provider":"Hydro Crop Shop","version":"1.0","type":"link"}