digital vs naked eye you decide

[sphelps]

Personally I think such a device would be a waist of money.

1 - I'm yet to meet anyone overly concerned regarding inaccurate salinity levels in their tank if they are already using a refractometer.

2 - Anyone overly concerned regarding inaccuracy of an NACL refractometer only needs to calibrate it once using natural seawater to verify it's accuracy. Once verified or even adjusted if it is way out the meter is now completely accurate.

3 - In my own personal testing my refractometer measures natural seawater perfectly accurate even calibrated with RO water. I've had this meter for years, it was over expensive ($50) and referred to as salinity refractometer.

4 - The resent outburst of concern regarding inaccurate refractometers seems more of a myth (exaggerated from fact) and now many companies are releasing new seawater refractometers, some digital some not but always with the promise of more accuracy and a significantly higher price tag. It just seems more of a marketing ploy to me.

5 - The only reason I would spend more on a digital device is if it would make things easier. However refractometers are already very easy and just the fact that you would have to calibrate it every time is enough to dismiss any gain from accuracy which I don't even believe is there. Conductivity meters are also prone to many errors as well, more so than a standard refractometer.