Bluelab pH PenPlus – Replaceable Probe pH & Temperature Meter Measure pH and temperature accurately and confidently with the Bluelab pH PenPlus, a durable handheld meter designed for hydroponics, horticulture, aquariums, laboratories and general water testing. Unlike standard disposable pH pens, the Bluelab pH PenPlus features a replaceable double junction pH and temperature probe, helping extend the usable life of the meter while reducing downtime and replacement costs. With its IP68 waterproof construction, bright backlit display, two-point calibration and automatic calibration reminder, the pH PenPlus is built for reliable everyday testing of nutrient solutions and water. Why Choose the Bluelab pH PenPlus? Accurate pH management is essential for nutrient availability, healthy plant growth and consistent crop performance. The Bluelab pH PenPlus gives growers a fast and convenient way to check both pH and temperature from a single compact device. Its biggest advantage is the replaceable probe system. If the probe eventually reaches the end of its service life, you can replace the probe instead of replacing the entire meter. This makes the pH PenPlus a practical long-term choice for growers who regularly monitor nutrient solutions. Key Features Measures pH and temperature Replaceable pH and temperature probe Double junction pH probe for stable and reliable measurements Helps extend the overall life of the meter Displays temperature in °C or °F Bright backlit display Hold function keeps the current reading on screen Simple screw-cap probe replacement system KCl-filled silicone storage cap Internal sponge helps keep the probe hydrated during storage Integrated lanyard Waterproof silicone probe cap Simple two-point calibration Automatic 30-day calibration reminder Auto-off function helps conserve battery life IP68 rated for dust and water resistance Compact and lightweight handheld design Suitable for hydroponics, horticulture, aquariums, laboratories and water testing Accurate pH and Temperature Measurement The Bluelab pH PenPlus measures two important parameters from one device: pH helps growers determine whether nutrients are available to plants within the desired range. Temperature is also important because nutrient solution temperature can influence root-zone conditions, oxygen availability and overall plant performance. Being able to check both measurements from a single meter makes daily nutrient management faster and more convenient. Replaceable Double Junction Probe One of the key advantages of the Bluelab pH PenPlus is its replaceable probe. pH probes are consumable components that naturally degrade over time. Instead of replacing the entire meter when the probe reaches the end of its usable life, the PenPlus allows the probe assembly to be replaced quickly. The double junction design also helps provide reliable and stable readings for regular testing applications. This replaceable design can help: Reduce equipment downtime Extend the usable life of the meter Reduce the need to replace the complete device Make long-term pH monitoring more economical Keep your testing setup ready for regular use Easy Two-Point Calibration Regular calibration is essential for maintaining accurate pH measurements. The Bluelab pH PenPlus features a simple two-point calibration system, allowing the meter to be calibrated using appropriate pH calibration solutions. An automatic 30-day calibration reminder helps growers remember when recalibration is due. For best performance, always follow the recommended calibration procedure and use fresh calibration solutions. Bright Backlit Display The large backlit screen makes measurements easy to read in grow rooms, propagation areas and other environments where lighting conditions may be limited. The built-in hold function also allows you to freeze the current measurement on the display, making it easier to record readings without keeping the probe in the solution. IP68 Waterproof and Dustproof Design Hydroponic environments can be wet, humid and demanding on equipment. The Bluelab pH PenPlus features an IP68-rated enclosure, helping protect the meter against dust and water exposure during normal use. Its compact handheld design also makes it easy to carry between reservoirs, grow areas and testing stations. Keep the Probe Properly Hydrated Proper storage is important for maintaining pH probe performance. The Bluelab pH PenPlus includes a KCl-filled silicone storage cap with an internal sponge, designed to help keep the probe hydrated when it is not in use. Keeping the probe correctly stored can help maintain response time, accuracy and service life. Always follow Bluelab's storage and maintenance instructions and avoid allowing the pH probe to dry out. Ideal For The Bluelab pH PenPlus is suitable for: Hydroponic nutrient solutions Indoor grow rooms Commercial horticulture Coco and soilless growing Reservoir monitoring Irrigation water testing Aquariums Laboratories General water testing Home and professional growers Frequently Asked Questions What does the Bluelab pH PenPlus measure?The Bluelab pH PenPlus measures both pH and temperature in nutrient solutions and water. Can the probe on the Bluelab pH PenPlus be replaced?Yes. The pH and temperature probe is replaceable, allowing you to replace the probe when required instead of purchasing an entirely new meter. What is the benefit of a replaceable probe?A replaceable probe can extend the working life of the meter, reduce downtime and make long-term maintenance more economical. Does the Bluelab pH PenPlus measure temperature?Yes. Temperature can be displayed in either degrees Celsius or Fahrenheit. Is the Bluelab pH PenPlus waterproof?Yes. The meter has an IP68 dustproof and waterproof rating. How often should the Bluelab pH PenPlus be calibrated?The meter includes an automatic 30-day calibration reminder. Calibration frequency may also depend on usage and measurement conditions. Does the pH PenPlus have a backlit screen?Yes. Its bright backlit display makes readings easier to view in low-light grow environments. How should the pH probe be stored?The probe should be kept properly hydrated using the supplied storage cap and appropriate KCl storage solution according to Bluelab's instructions. Bluelab pH PenPlus Manual Refer to the Bluelab pH PenPlus Manual for detailed instructions covering: Initial setup pH calibration Temperature measurement Probe cleaning Probe storage Probe replacement Troubleshooting General maintenance Bluelab pH PenPlus – Accurate Testing with a Replaceable Probe The Bluelab pH PenPlus Replaceable Probe pH & Temperature Meter combines accurate measurement, straightforward calibration and durable waterproof construction with the long-term convenience of a replaceable probe. For growers who regularly monitor nutrient solutions and want to reduce downtime, extend equipment life and maintain reliable pH control, the Bluelab pH PenPlus is a practical addition to any hydroponic or horticultural setup.
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