This refractometer is a portable, precision optical instrument. It's a convenient tool for the measurement of seawater (marine aquaria) or very low concentrated salt solutions. No battery needed.
It features high-quality...

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This refractometer is a portable, precision optical instrument. It's a convenient tool for the measurement of seawater (marine aquaria) or very low concentrated salt solutions. No battery needed.
It features high-quality optics with ultra smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system.

Dual scale:One is specific gravity, range: 1.000-1.070 g/cm3, resolution: 0.001 g/cm3. Another is salt percent, range: 0-100 ppt ( or say parts per thousand), resolution: 1 ppt.

The usual salinity of selected aqueous solutions
Fresh water--------------<0.5 ppt
Brackish water--------------0.5 to 30 ppt
Saline water--------------30 to 50 ppt
Brine-------------->50 ppt
*Salinity 36 ppt means that there are 36 grams of salt in 1 liter aqueous solution.*

Notice:
1.Accurate measurement based on good calibration, please calibrate the refractometer before your first use. But you don't have to calibrate it frequently, once every a few months is OK.
2.When you put your sample to be tested on the daylight plate, make sure the liquid spreads across the entire surface of the prism without air bubbles or dry spots.
3.Clean the instrument with a soft cloth after each use, keep the refractometer dry and clean, which will keep the instrument accurate and durable. Do not put the entire instrument into water to wash, this may lead the
refractometer to be foggy or rusty inside.

Warranty:Full 12 Month Replacement Warranty & Any Questions Will be Answered within 24 Hours.

  • DESIGNED FOR - testing the concentration of saltwater, help you to monitor and control the concentration of salt water.
  • WIDELY USE - Can be used for Aquariums, Marine Monitoring, Agricultural, Gardening & Educational Purposes.
  • EASY , ACCURATE & AFFORDABLE - This refractometer is more accurate and easier to use than traditional hydrometers, more affordable than digital refractometers.
  • DUAL SCALE -- Provides reading of 0-100PPT(parts per thousand ) and corresponding specific gravity range 1.000 to 1.070. You can get the both result at just one test.
  • AUTOMATIC TEMPERTURE COMPENSATION --The build-in Automatic Temperature Compensation feature makes it get consistently accurate reading, no need to control the liquids temperature deliberately, just make sure it's at roomtemperature .
  • DESIGNED FOR - testing the concentration of saltwater, help you to monitor and control the concentration of salt water.
  • WIDELY USE - Can be used for Aquariums, Marine Monitoring, Agricultural, Gardening & Educational Purposes.
  • EASY , ACCURATE & AFFORDABLE - This refractometer is more accurate and easier to use than traditional hydrometers, more affordable than digital refractometers.
  • DUAL SCALE -- Provides reading of 0-100PPT(parts per thousand ) and corresponding specific gravity range 1.000 to 1.070. You can get the both result at just one test.
  • AUTOMATIC TEMPERTURE COMPENSATION --The build-in Automatic Temperature Compensation feature makes it get consistently accurate reading, no need to control the liquids temperature deliberately, just make sure it's at roomtemperature .

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