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HM Digital inline TDS monitor with 1/4 in fittings

HM Digital ★ 3.8/5 · ItemOracle Score Budget

$33 USD
Price subject to change
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HM Digital Triple Inline RO/DI TDS Monitor with 1/4 inch T-Fittings

Inline TDS monitor with three sensing points and auto-off. Easy to install with quick-connect T-fittings; factory-calibrated and recalibratable with a mini-screwdriver. Customers note accurate monitoring and good value, though some report readings and fit issues

Highlights

  • three sensing points TDS display
  • recalibratable with screwdriver
  • auto-off and quick-connect fittings

Pros

  • three sensing points monitoring
  • quick-connect 1/4" fittings
  • auto-off function
  • factory-calibrated and recalibratable
  • easy installation

Cons

  • mixed accuracy and fit feedback
  • some compatibility issues with readings

Best For

  • reef tank monitoring
  • freshwater aquariums
  • drinking water quality checks
  • RO/DI system monitoring
  • home aquaponics setups
  • water quality verification

Features

  • Factory calibration with a 342 ppm NaCl solution for reference
  • Recalibration using a mini-screwdriver for adjustments
  • Includes Quick-Connect 1/4 inch T-fittings for installation
  • Auto-Off function conserves power when idle
  • Displays TDS levels at three sensing points via electrode probes

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