Features:

  • DUAL SCALES - The measures on dual scales: Specific Gravity (0.001, Range: 1.000 - 1.070, D 20/20,) and Parts Per Thousand (1‰, Range: 0-100‰),working basis on that the liquid with different concentrations have different light refractive index.
  • HIGHLY ACCURATE WITH ATC - Automatic Temperature Compensation during 10 °C to 30 °C, eliminating data errors caused by temperature changes and guaranteeing a consistent accurate result.
  • DURABLE AND PORTABLE - The main part is made of chromium, it's light but durable.
  • EASY TO USE - Just need 2-3 drops of solution, you can get accurate readings.
  • WIDELY USED - Ideal for aquariums and marine monitoring,salty water tank, seafood water tank, salty pools and spas etc.
Holds calibration, works as it should

I bought this to replace my more expensive one that broke. It feels cheep, but that being said, it holds its calibration better then my more expensive one. I strongly recommenced buying the calibration fluid (its like 10 bucks) and using that to calibrate it, when I received mine it was off by 5ppm but easy to calibrate ... Other then that it is great! hold its calibration, easy to use and very clear.

bettre then the plastic one you fill up .

Calibration is a most. Use distilled water and works perfect.

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