{"product_id":"bluelab-plus-ph-pen","title":"Bluelab pH PenPlus","description":"\u003ch1 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBluelab pH PenPlus – Replaceable Probe pH \u0026amp; Temperature Meter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003eBluelab pH PenPlus\u003c\/strong\u003e is a professional handheld \u003cstrong\u003epH and temperature meter\u003c\/strong\u003e designed for fast, reliable testing of hydroponic nutrient solutions, irrigation water, reservoirs and runoff.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eBuilding on the proven Bluelab pH Pen design, the \u003cstrong\u003epH PenPlus adds a replaceable pH and temperature probe\u003c\/strong\u003e, allowing the sensing element to be replaced when it eventually wears out instead of replacing the complete meter.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus features a \u003cstrong\u003edouble-junction pH probe, automatic temperature compensation, two-point calibration, backlit display, hold function and IP68 waterproof construction\u003c\/strong\u003e. A 30-day calibration reminder helps keep routine maintenance on schedule, while the KCl-filled storage cap keeps the sensitive pH probe properly hydrated between measurements.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eFor hydroponic and horticultural growers who regularly monitor nutrient-solution pH, the Bluelab pH PenPlus provides a straightforward, serviceable meter designed for long-term use.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures \u003cstrong\u003epH and temperature\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReplaceable pH and temperature probe\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDouble-junction pH probe\u003c\/li\u003e\n\u003cli\u003epH measurement range of \u003cstrong\u003e0.0–14.0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e0.1 pH resolution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e±0.1 pH accuracy at 25°C\u003c\/li\u003e\n\u003cli\u003eTemperature measurement from \u003cstrong\u003e0–50°C \/ 32–122°F\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAutomatic Temperature Compensation\u003c\/li\u003e\n\u003cli\u003eTemperature selectable in °C or °F\u003c\/li\u003e\n\u003cli\u003eBright backlit display\u003c\/li\u003e\n\u003cli\u003eHold-reading function\u003c\/li\u003e\n\u003cli\u003eSimple \u003cstrong\u003etwo-point pH calibration\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e30-day calibration reminder\u003c\/li\u003e\n\u003cli\u003eProbe-health maintenance made easier through replaceable design\u003c\/li\u003e\n\u003cli\u003eScrew-cap probe connection for straightforward replacement\u003c\/li\u003e\n\u003cli\u003eKCl-filled silicone storage cap\u003c\/li\u003e\n\u003cli\u003eInternal storage-cap sponge maintains probe hydration\u003c\/li\u003e\n\u003cli\u003eIntegrated lanyard\u003c\/li\u003e\n\u003cli\u003eAuto-off function\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIP68 waterproof and dustproof\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCompact handheld design\u003c\/li\u003e\n\u003cli\u003ePowered by \u003cstrong\u003e1 × AAA alkaline battery\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for nutrient solutions and runoff\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-year limited meter warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCompatible with the \u003cstrong\u003eBluelab pH ProbePlus\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eMeasure pH \u0026amp; Temperature with One Pen\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus measures the two parameters growers routinely need when checking the acidity or alkalinity of a nutrient solution:\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003epH influences nutrient availability.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eA nutrient solution may contain all the required mineral elements, but an unsuitable pH can reduce the availability of particular nutrients to the plant.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eRegular measurement allows growers to identify pH movement and make informed adjustments.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus simultaneously measures solution temperature.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eTemperature is important both as a growing parameter and because pH measurement itself is temperature sensitive.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe built-in \u003cstrong\u003eAutomatic Temperature Compensation\u003c\/strong\u003e accounts for solution temperature when calculating the pH reading.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eReplaceable pH Probe\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe defining feature of the \u003cstrong\u003eBluelab pH PenPlus\u003c\/strong\u003e is its replaceable probe.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003epH electrodes are consumable electrochemical sensors. Even with proper maintenance, they naturally age over time.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eWith a conventional fixed-probe pH pen, eventual probe failure can mean replacing the complete instrument.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus separates the main meter from the replaceable sensing component.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eWhen required:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eRemove Old Probe → Install Bluelab pH ProbePlus → Hydrate → Calibrate → Continue Measuring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eNo specialist tools are required for probe replacement.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis makes the PenPlus particularly attractive to growers who use their pH meter frequently and want a more serviceable long-term solution.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBluelab pH ProbePlus\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus is compatible with the dedicated \u003cstrong\u003eBluelab pH ProbePlus\u003c\/strong\u003e replacement sensor.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe replacement assembly measures both:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eIt also retains the PenPlus's \u003cstrong\u003edouble-junction probe construction\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eKeeping a replacement probe available can minimise downtime for commercial growers and anyone who depends on regular nutrient-solution measurements.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDouble-Junction pH Probe\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus uses a \u003cstrong\u003edouble-junction pH probe\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis design provides an additional barrier within the reference system compared with simpler single-junction electrodes, making it well suited to repeated measurement of nutrient solutions.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAs with all pH probes, performance still depends heavily on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCorrect hydration\u003c\/li\u003e\n\u003cli\u003eRegular cleaning\u003c\/li\u003e\n\u003cli\u003eProper storage\u003c\/li\u003e\n\u003cli\u003eFresh calibration solutions\u003c\/li\u003e\n\u003cli\u003eRoutine calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eGood probe maintenance is essential for dependable pH measurements.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIP68 Waterproof \u0026amp; Dustproof\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eGrow-room equipment operates in wet environments, so water resistance is particularly important for a handheld meter.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus carries an \u003cstrong\u003eIP68 ingress-protection rating\u003c\/strong\u003e, providing strong protection against both water and dust under the manufacturer's specified conditions.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis makes it well suited to regular use around:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNutrient tanks\u003c\/li\u003e\n\u003cli\u003eHydroponic reservoirs\u003c\/li\u003e\n\u003cli\u003eMixing stations\u003c\/li\u003e\n\u003cli\u003eIrrigation systems\u003c\/li\u003e\n\u003cli\u003eGreenhouses\u003c\/li\u003e\n\u003cli\u003eIndoor gardens\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eTwo-Point pH Calibration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus uses a simple \u003cstrong\u003etwo-point calibration process\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eFor most hydroponic applications, calibration is performed using:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003epH 7.0\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003efollowed by:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003epH 4.0\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eTwo-point calibration establishes the meter against known reference solutions so it can accurately interpret the electrical response from the pH electrode.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAlways use fresh, uncontaminated calibration solution.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e30-Day Calibration Reminder\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eRegular calibration is essential for maintaining a pH meter.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus includes a \u003cstrong\u003e30-day calibration reminder\u003c\/strong\u003e, providing a convenient prompt when routine calibration is due.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis is particularly useful in busy grow rooms where meter maintenance can otherwise be easily overlooked.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKCl Probe Storage System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe glass pH sensor must remain hydrated between uses.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus uses a \u003cstrong\u003eKCl-filled silicone storage cap with an internal sponge\u003c\/strong\u003e to maintain appropriate moisture around the probe.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis is extremely important for maintaining pH probe performance.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eNever Store a pH Probe Dry\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eAllowing a pH electrode to dry out can affect its response and measurement performance.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDon't Store the Probe in RO or Distilled Water\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003ePure water is not an appropriate substitute for proper pH-probe storage solution.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eUse \u003cstrong\u003eBluelab KCl Storage Solution\u003c\/strong\u003e as directed.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBright Backlit Display\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus features a bright backlit display for easy reading in grow rooms, nutrient mixing areas and other environments where lighting may be limited.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe screen provides straightforward measurement information without requiring a separate device or app.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHold Reading Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003ehold function\u003c\/strong\u003e allows the current measurement to remain displayed after taking a reading.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis can be particularly useful when measuring inside a large reservoir or another location where the display isn't convenient to read while the probe is submerged.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eTake the measurement, hold the reading and then remove the meter for easier viewing.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eAutomatic Temperature Compensation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus automatically compensates pH measurements according to the temperature of the solution.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis helps provide consistent readings across the meter's operating temperature range without requiring manual temperature correction.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIdeal for Hydroponics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus is particularly suited to growers working with liquid nutrient solutions.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eApplications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHydroponics\u003c\/li\u003e\n\u003cli\u003eCoco cultivation\u003c\/li\u003e\n\u003cli\u003eFertigation\u003c\/li\u003e\n\u003cli\u003eRun-to-waste systems\u003c\/li\u003e\n\u003cli\u003eRecirculating hydroponics\u003c\/li\u003e\n\u003cli\u003eNutrient reservoirs\u003c\/li\u003e\n\u003cli\u003eIrrigation tanks\u003c\/li\u003e\n\u003cli\u003eSource water\u003c\/li\u003e\n\u003cli\u003eNutrient mixing\u003c\/li\u003e\n\u003cli\u003eRunoff testing\u003c\/li\u003e\n\u003cli\u003eDrain-water testing\u003c\/li\u003e\n\u003cli\u003eIndoor gardens\u003c\/li\u003e\n\u003cli\u003eGreenhouses\u003c\/li\u003e\n\u003cli\u003eCommercial horticulture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eChecking Nutrient Solution pH\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eA typical nutrient-mixing process might look like:\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 1 – Prepare Your Water\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eFill the reservoir with the required amount of source water.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 2 – Add Nutrients\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eAdd fertilisers and supplements according to your feeding program.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eMix thoroughly.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 3 – Measure EC Separately\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIf nutrient strength needs to be checked, use an appropriate conductivity meter.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eThe pH PenPlus does not measure EC.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 4 – Measure pH\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eRemove the storage cap and place the PenPlus probe into the nutrient solution.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAllow the reading to stabilise.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 5 – Adjust if Required\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eMake any required pH adjustment, mix thoroughly and measure again.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStep 6 – Rinse \u0026amp; Store\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eRinse the probe appropriately after use and replace the KCl storage cap.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003epH PenPlus vs Bluelab pH Pen\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus is an evolution of the standard Bluelab pH Pen rather than a completely different type of instrument.\u003c\/p\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003eBluelab pH PenPlus\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003cstrong\u003eBluelab pH Pen\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Measurement\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e0.0–14.0\u003c\/td\u003e\n\u003ctd\u003e0.0–14.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1\u003c\/td\u003e\n\u003ctd\u003e0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1\u003c\/td\u003e\n\u003ctd\u003e±0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble-Junction Probe\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic Temperature Compensation\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacklit Display\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-Point Calibration\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30-Day Calibration Reminder\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaceable Probe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eYes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNo\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP68 Rating\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eYes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterproof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2 Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003eThe major reason to step up to the \u003cstrong\u003ePenPlus is the replaceable probe and longer meter warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003epH PenPlus vs Bluelab OnePen\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eIt's also important not to confuse the PenPlus with the \u003cstrong\u003eBluelab OnePen\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus measures:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003epH + Temperature\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe OnePen measures:\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003epH + EC + Temperature\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIf you already own a conductivity meter or Bluelab Truncheon, the \u003cstrong\u003epH PenPlus\u003c\/strong\u003e can be an excellent dedicated pH companion.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIf you want pH and conductivity combined into a single handheld instrument, the \u003cstrong\u003eOnePen\u003c\/strong\u003e is the appropriate Bluelab model.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Bluelab pH PenPlus includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1 × Bluelab pH PenPlus\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × Replaceable Bluelab pH\/Temperature Probe\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 18mL pH 7.0 Calibration Solution Sachet\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × 18mL pH 4.0 Calibration Solution Sachet\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1 × Bluelab KCl Storage Solution Sachet\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eThis provides the essential solutions required to prepare and calibrate the meter for initial use.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBluelab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003epH PenPlus\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePENPLUSPH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH \u0026amp; Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.0–14.0\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.1 pH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Accuracy @ 25°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e±0.1 pH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0–50°C \/ 32–122°F\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1°C \/ 1°F\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Accuracy @ 25°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e±1°C \/ ±2°F\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Compensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-Junction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaceable Probe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eYes\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplacement Probe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBluelab pH ProbePlus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Reminder\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e30 Days\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHold Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBacklit Display\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater\/Dust Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eIP68\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1 × AAA Alkaline Battery\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSolution ≥0.2 EC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeter Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2-Year Limited Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplacement Probe Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e6 Months\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Buy the Bluelab pH PenPlus?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003eBluelab pH PenPlus\u003c\/strong\u003e takes the simplicity of a handheld pH meter and addresses one of the biggest limitations of traditional pH pens: \u003cstrong\u003eeventual probe wear\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eInstead of throwing away the entire instrument when its electrochemical sensor reaches the end of its useful life, the PenPlus allows the \u003cstrong\u003epH and temperature probe to be replaced separately\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThat gives growers a meter designed around continued use rather than complete instrument replacement.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eCombine this with a \u003cstrong\u003edouble-junction sensor, automatic temperature compensation, IP68 protection, backlit display, two-point calibration and 30-day calibration reminder\u003c\/strong\u003e, and the PenPlus is a strong choice for growers who want a dedicated pH meter they can maintain over the longer term.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat does the Bluelab pH PenPlus measure?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt measures \u003cstrong\u003epH and solution temperature\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes the pH PenPlus measure EC?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eNo. The PenPlus measures pH and temperature only. Pair it with a conductivity meter if you also need EC measurement.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat is the pH measurement range?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e0.0–14.0 pH.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat is the pH resolution?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e0.1 pH.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHow accurate is it?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eBluelab specifies pH accuracy of \u003cstrong\u003e±0.1 at 25°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIs the probe replaceable?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. This is one of the main advantages of the PenPlus.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhich replacement probe does it use?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus uses the \u003cstrong\u003eBluelab pH ProbePlus\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDo I need tools to replace the probe?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eNo. The screw-cap probe design allows straightforward replacement without specialist tools.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIs it waterproof?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. The PenPlus has an \u003cstrong\u003eIP68 dustproof and waterproof rating\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it measure temperature?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. It measures \u003cstrong\u003e0–50°C \/ 32–122°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it have Automatic Temperature Compensation?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. Like any quality pH meter, regular calibration is required.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it remind me to calibrate?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. It features a \u003cstrong\u003e30-day calibration reminder\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat calibration solutions do I need?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eFor typical hydroponic use, \u003cstrong\u003epH 7.0 and pH 4.0 calibration solutions\u003c\/strong\u003e are used.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHow should I store the probe?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eKeep the probe hydrated using \u003cstrong\u003eKCl Storage Solution\u003c\/strong\u003e in the supplied storage cap.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCan I store the probe in distilled or RO water?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eNo. Use proper KCl pH-probe storage solution.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCan I measure runoff?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. The PenPlus is suitable for measuring pH and temperature in appropriate nutrient solutions and runoff.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat battery does it use?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt uses \u003cstrong\u003e1 × AAA alkaline battery\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat is the warranty?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe PenPlus has a \u003cstrong\u003e2-year limited warranty\u003c\/strong\u003e, while the replaceable pH ProbePlus carries a \u003cstrong\u003e6-month limited warranty\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"Bluelab pH PenPlus","offer_id":52611733913890,"sku":"PBLBMBL6532S","price":184.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0728\/6833\/1810\/files\/Bluelab-PH-Penplus.jpg?v=1790140966","url":"https:\/\/www.greengenius.com.au\/products\/bluelab-plus-ph-pen","provider":"Green Genius","version":"1.0","type":"link"}