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

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About This Lab-grade pH meter designed specifically to meet growers' needs and habits Measures pH and temperature with premium probe technologies, ensuring high accuracy and durabi lity with minimal maintenance Grower-friendly calibration workflow on an HD backlit screen allows you to finish 2-point calibration within a minute Replaceable double-junction pH probe helps you save money in the long run pH probe condition indicator and calibration reminder function help you perform proper maintenance in a breeze Show more