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Apera AI101G GroStar pH Pen Tester Kit with Replaceable Probe

Apera Instruments ★ 3.7/5 · ItemOracle Score Mid-Range

$98 USD
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Apera Instruments AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II

Lab-grade pH meter for growers, measuring pH and temperature with a replaceable double-junction probe. Quick 2-point calibration on an HD backlit screen plus maintenance reminders; praised for accuracy and ease of use by customers

Highlights

  • replaceable double-junction pH probe
  • quick 2-point calibration
  • HD backlit screen with calibration workflow

Pros

  • lab-grade pH meter for growers
  • replaceable double-junction probe
  • fast 2-point calibration within a minute
  • pH and temperature measurement
  • calibration reminders and probe condition indicator

Cons

  • needs regular maintenance for accuracy

Best For

  • hydroponics water quality testing
  • soil and nutrient solution monitoring
  • grower calibration workflows
  • on-site measurement with backlit display
  • maintenance reminders for probes
  • durable pH testing in labs

Features

  • Lab-grade pH meter designed to meet grower needs and habits
  • Measures pH and temperature with the probe technology
  • Two-point calibration completed quickly using a backlit HD screen
  • Replaceable double-junction pH probe to extend long-term use
  • pH probe condition indicator and calibration reminder for maintenance

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