I don't even own a refractometer, but, knowing there are salt AND seawater versions that have different slopes, does the makeup of the calibration fluid affect accuracy?
I've never seen anything about the makeup of commercial calibration fluids, only Randy's DIY version so I was wondering if a seawater refractometer is still accurate when using a calibration fluid of just sodium chloride and not actual seawater salts combined? It's just an old man's curiosity.
(I still use my 24 yr old Seatest Swingarm along with one about 2 yrs newer)
I've never seen anything about the makeup of commercial calibration fluids, only Randy's DIY version so I was wondering if a seawater refractometer is still accurate when using a calibration fluid of just sodium chloride and not actual seawater salts combined? It's just an old man's curiosity.
(I still use my 24 yr old Seatest Swingarm along with one about 2 yrs newer)