<< Does anyone know of a commercially available hygrometer sensitive enough to
calculate a salinity of 2ppt? I have the both the floating glass type, and
the plastic rectangular box with the floating arrow, but neither type is
sensitive enough.
>>
You'll either have to go with a refractometer (around $100) or a salinity
test tit....I've used one by Lamotte (I'd guess $30-50). Either will work,
but I like the refractometer better.
J.R.
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