The pH PenPlus delivers industry-leading Bluelab pH confidence, engineered for continuity. Product Overview: The difference is simple. When natural probe wear occurs, the probe can be replaced, not the whole pen. Simply swap out the probe to quickly restore performance.Built to IP68 standards, dustproof, waterproof, and designed for demanding environments, the pH PenPlus encourages long-term use while protecting your workflow and investment.The pH PenPlus is about readiness. Keeping a replacement probe on hand means less downtime, less disruption and continued confidence in every reading. The Bluelab pH PenPlus. pH confidence you can swap back in.It’s time to unlock your plants’ full potential. Use your Bluelab pH PenPlus with confidence, knowing that our team is here to support you with expert advice and product availability, so you can grow with confidence.Whether you’re just starting or are committed to your journey in the art and science of growing for a healthier world. Product Contents: 1x Bluelab pH PenPlus with replaceable pH and Temperature probe1x Bluelab pH 7.0 Calibration Solution, single-use1x Bluelab pH 4.0 Calibration Solution, single-use1x Bluelab KCl Storage Solution1x Multi-language Getting Started Guide (EN, ES, DE, FR) Product Benefits: Replaceable pH probeDouble junction pH probe. Get longer life from your pH penBuilt for growersDesigned for everyday use, the Bluelab pH PenPlus is IP68 water and dust proofAccurate & reliableTake fast, stable measurements with a 30-day calibration reminder. Read temperature in °C or °FEasy to useHandheld design is compact and lightweight. Backlit display is bright & easy to read