Coralife Hydrometer Salinity Meter

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Saltwater Hydrometer (salinity meter) by Coralife

Calibration Certified

  • Accurate to +0.001 (specific gravity units)

Wide-range Specific Gravity Meter

Accurate, Fast and Easy to use.

The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other flat surface when taking salt readings.

  • Specific Gravity and Salinity PPT Scales
  • Optimal Specific Gravity / Salinity range indicator on scale
  • Bubble diffuser on water intake prevents micro-bubbles from forming on needle


  • Easy to read and accurate to +0.001 specific gravity units
  • Water is diverted to bottom to reduce excess bubbles
  • Gives temperature-corrected readings in warm water aquariums (68-85 degrees F)


  1. Submerge hydrometer 6" below water surface to fill line
  2. Remove from water and place on level surface
  3. Tap to dislodge any air bubbles on the pointer (bubbles will cause inaccurate readings)
  4. View specific gravity on inside scale and parts per thousand (ppt) on outside scale
  5. Rinse thoroughly with freshwater after each use

Size 5-1/2"L x 1-3/8"W x 8-1/2"H