Lf icecap salinity tester
 

I wear eyeglasses and it’s impossible to see through the eyepiece of a refractometer.

I have had two and both were unreliable by quite a lot. No matter how much I calibrated. Just giving you a heads up. I notice it appears to be discontinued which does not surprise me.

I think there are reliable salinity testers by other manufacturers

Thanks. Is hanna any good?

I wear eyeglasses as well.
I cannot see through the refractometer with my glasses on either.
So I take the glasses off and turn the eyepiece on the meter until the focus is proper.
I was under the impression that they were all like that.

Not sure but I have been planning to try it or something similar.