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Apera GroStar 6-in-1 pH/EC/ORP Probe Kit Gen II

Apera Instruments ★ 3.3/5 · ItemOracle Score Premium

$188 USD
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Apera Instruments GroStar Series GS4-P pH/EC/500ppm/700ppm/ORP 6-in-1 Combo Pen Tester Kit with Replaceable Double-Junction pH/EC Probe and ORP Probe for Hydroponics Water Quality Testing, Gen II

6-in-1 pH, EC, ORP tester kit with replaceable double-junction probes for hydroponics. Accurate readings and quick results; designed for growers and easy calibration, with reliable performance

Highlights

  • 6-in-1 measurement capability
  • replaceable double-junction probes
  • designed for growers

Pros

  • 6-in-1 measurement (pH, EC, ORP, 500ppm, 700ppm, temperature not listed)
  • Replaceable double-junction probes
  • Lab-grade instrument tailored for growers
  • Clear, quick readings (under 10 seconds)
  • Out-of-the-box calibration reliability

Cons

  • Mixed opinions on durability

Best For

  • hydroponic nutrient monitoring
  • water quality testing for hydroponic setups
  • calibrated pH and EC measurement for plant growth
  • ORP-based oxidation-reduction checks
  • repeatable readings in grow environments
  • outdoor greenhouse or indoor grow room use

Features

  • 6-in-1 tester measures pH, EC, ORP, temperature, 500ppm and 700ppm
  • Replaceable double-junction pH probe with titanium EC sensor
  • HD backlit display enables quick 2-point calibration in under a minute
  • Lab-grade instrument designed for growers with durable, low-maintenance operation
  • Includes all-in-one replaceable probe with separate pH and EC sensing capabilities

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