calibrating salt hydrometers

From: Ken Hilderbrand (ken.hilderbrand@hmsc.orst.edu)
Date: Tue Feb 19 2002 - 11:23:30 PST

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    >From the discussion on calibration (or not) of salometers (salt hydrometers)
    I learned that there are plastic hydrometers on the market which do need to
    be checked for accuracy. A respondent said:

    "these hydros tended to fail due to glue release or seam
    leakage and regular calibration WAS necessary"

    Also mentioned were the conductivity meters which of course need
    calibration. All other respondents, in one way or another, said they failed
    to see any useful purpose in calibrating the common glass salt hydrometers.
    Some also mentioned the obvious - keep glass instruments in the lab, not the
    process area.

    Thanks to all who took the time to respond!

    Ken H

    Kenneth S. Hilderbrand Jr.
    Seafood Processing Specialist
    Sea Grant Extension Program
    Oregon State Univ. Marine Science Center
    2030 Sth Marine Science Drive
    Newport, Oregon 97365-5296 USA
    phone: 541 867-0242
    fax: 541 867-0369
    email: <ken.hilderbrand@hmsc.orst.edu>

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