SALINITY REFRACTOMETER
FOR AQUARIUM USE
To check salinity- simply place 2-3 drops of tank water on the meter and look at the reading through the eyepiece.
To calibrate- place 2-3 drops of R.O. or distilled water on the meter, look through the eyepiece and turn the calibration screw until the scale reads 0.
Improved prism design for easier viewing No screwdriver needed for calibration (thumbscrew adjustment) Minimum division- 1% - 0.001 specific gravity Accurate to 1 division Includes storage case