Mantis Digital Gravimeter Salinity Test Pen

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A must have, fantastic test pen. Highly recommended by Cellar Marine Aquatics.
  • Designed for seawater salinity analysis
  • High-Res salinity measurement
  • Water temperature reading
  • Large backlit LCD display
The instrument’s high accuracy and simple operation gives reliable results each and every time. All readings are automatically compensated for temperature variations.


  • Salinity: 1.000-1.041
  • TDS: 1-9999
  • PPT: 0-50
  • Temperature: 0-40c
  • Power: 2x AAA Batteries (included)

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