Spootnick spootnick at
Wed Mar 29 23:16:05 EST 1995

The hand-held refractometers I am familar with will indicate the "total
dissolved solids" in the juice or sap of a plant, and they're usually used
on fruits to indicate the sugar content so the fruit can be harvested at
the best time.  I am not aware of other uses of them.  There are
stationary laboratory models that have better accuracy than the portable

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