AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II

From the manufacturer Apera Instruments GroStar GS1 pH Pen (Gen II) is a lab-grade pH meter designed specifically for growers to easily manage crop success, featuring a replaceable double-junction pH probe and a grower-friendly workflow along with other intelligent functions and features that help reduce the guesswork and give you the confidence in every measurement. State-of-the-art pH sensor tech The GroStar pH probe is featured with a anti-contamination double-junction reference system and blue gel inner electrolyte along with a lithium glass membrane, allowing you to easily take accurate pH measurement in the long term. The probe is replaceable just so you only need to replace the probe when it reaches its end of life instead of buying a whole new tester.

3-color backlit HD display White for measurement mode Green for calibration mode Red for calibration error Durable Structure IP67 waterproof and dust-proof rating allows you to use in harsh environment. Complete Test Kit The pen comes with a complete set of all the necessary accessories for you to take reliable pH and EC measurement. Range 0 to 14.0 pH, 0 to 50C (32 to 122F) Resolution 0.1 pH, 0.1C / 0.1F Accuracy ± 0.1 pH, ±1C/±1F Temperature Compensation Automatic 0 to 50C (32 to 122F)
Calibration pH: Automatic 1 to 3 points (4/7/10) Unit pH, C, F Power Supply 4 AAA alkaline batteries Backlight White (measurement); Green (calibration); Red (error reminder) Waterproof Rating IP67 pH Probe Low-impedance li