It is a calibration liquid for the refractometer
10 ml calibration fluid 35ppt / 1,026 SG.
The correct way to calibrate a refractometer is by using a calibration fluid
About 100 tests
10 ml calibration fluid 35ppt / 1,026 SG.
The correct way to calibrate a refractometer is by using a calibration fluid
About 100 tests