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 Benefits Replaceable pH probeDouble junction pH probe. Get longer life from your pH pen Built for growersDesigned for everyday use, the Bluelab pH PenPlus is IP68 water and dust proof Accurate & reliableTake fast, stable measurements with a 30-day calibration reminder. Read temperature in °C or °F Easy to useHandheld design is compact and lightweight. Backlit display is bright & easy to read Product Features Double-junction pH probe for reliable measurements Replaceable pH/temperature probe Temperature in °C or °F Hold-reading function Screw-cap probe design for quick replacement KCl-filled silicone cap with internal sponge maintains probe hydration Integrated lanyard with waterproof silicone probe cap Bright backlit display for easy reading Simple 2-point calibration with 30-day reminder Auto-off function to conserve battery IP68 dustproof and waterproof rating Compact handheld design
