ok so i bought a refractometer because i wanna get pinpoint accuracy of my tanks salinity and i have a few questions.
ok so first of it’s a fairly old refractometer it looks to be sitting on that shelf for a while will that affect how it works i opened it up and it looks brand new though.
also how do i calibrate it do i need special fluid and dose temperature mess with the reading of the salinity.
also it’s a sybon opticon series fg100sa
ok so first of it’s a fairly old refractometer it looks to be sitting on that shelf for a while will that affect how it works i opened it up and it looks brand new though.
also how do i calibrate it do i need special fluid and dose temperature mess with the reading of the salinity.
also it’s a sybon opticon series fg100sa