hydrometer dilemma

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Former US Army Bomb Technician (EOD)
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"Cindy" wrote in message
y.com...
: Pszemol wrote:
: Try soaking both hydrometers for a day or two in kitchen vineger regularly.
: Then wash it with warm water. This will dissolve deposits and make them
: more
: reliable. I have also read on the back of the packaging that the
: manufacturer
: recommends soaking it for at least 24 hours in sea water before
: first use to "season the needle". I have no idea what science is
: behind this recomendation, but maybe it is important fact you missed
: comparing your old, dried out hygrometer readings with the other one.
:
: From my own experience I prefer swing arms over refractometers by far!
: Contrary to some people here I found them much easier to use than
: to stare into tiny viewfinder and find the reading on very, very tiny scale
: with an edge between blue and white regions being not always very sharp.
: It might be some problem with my blue refractometer made in China
: or some problems with my vision but I just find it very difficult to use
: :-)
: With added uncertainity of most of them being calibrated to NaCl not NSW
: they are not worth the price for the average aquarist. I can use Deep Six
: hydrometer with good or bad light and I find them very reliable when
: I wash them frequently and not let them dry with salt water in their
: cavity.
:
: I've never used anything but a swing arm. And I always rinse with fresh
: water after using -- learned that when I got the Seatest. I just keep
: the thing on the dish drainer. But I'll soak it and see how it reads
: after that, plus I bought me a 2-liter bottle of Coke so I can
: calibrate it. Thanks!