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Old 11/16/2003, 03:30 PM
ATJ ATJ is offline
20 and over club
Join Date: Feb 2000
Location: Sydney, NSW, Australia
Posts: 4,215
Most generic hydrometers aren't very accurate. If you were able to calibrate it against a refectometer (do you know anyone with one?) at both normal specific gravity and 1.009 you'd be in better shape.

Many online stores have refectometers and they are a good tool even at normal salinity. You could probably get one shipped in a day - before you get the salinity down too far.