Hello all,
I cannot tell what my salinity is. Let me explain:
I have a cheap refractometer, a red sea branded one and a brand new (arrived today) Hanna salinity tester.
I have used the Hanna calibration liquid on the Hanna checker and RO/DI on the refractometers.
Calibrated on RO/DI:
Refractometer reads tank at 33ppt (and reads refractometer at 40ppt)
Calibrated on Brightwell 35ppt Calibration fluid:
refractometer reads tank at 30ppt
calibrated on Brightwell 35ppt fluid 2nd bottle:
refractometer reads tank at 28ppt
Hanna freshly calibrated:
Hanna read tank at 33.5ppt
My refractometers read the Hanna calibration solution at 25ppt
My Hanna checker reads my Brightwell calibration solution at 40ppm
I have no idea what numbers to trust or read
I cannot tell what my salinity is. Let me explain:
I have a cheap refractometer, a red sea branded one and a brand new (arrived today) Hanna salinity tester.
I have used the Hanna calibration liquid on the Hanna checker and RO/DI on the refractometers.
Calibrated on RO/DI:
Refractometer reads tank at 33ppt (and reads refractometer at 40ppt)
Calibrated on Brightwell 35ppt Calibration fluid:
refractometer reads tank at 30ppt
calibrated on Brightwell 35ppt fluid 2nd bottle:
refractometer reads tank at 28ppt
Hanna freshly calibrated:
Hanna read tank at 33.5ppt
My refractometers read the Hanna calibration solution at 25ppt
My Hanna checker reads my Brightwell calibration solution at 40ppm
I have no idea what numbers to trust or read