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Old June 10th 06, 07:31 PM posted to rec.aquaria.marine.reefs
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Default hydrometer dilemma

You could do that but first you will still need to know what its salinity is.

--
Boomer

If You See Me Running You Better Catch-Up

Former US Army Bomb Technician (EOD)
Member; IABTI, NATEODA, WEODF, ISEE & IPS

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"Cindy" wrote in message
. net...
: Boomer wrote:
: I think Wayne that is mostly are fault as we may make it sound that way :-) And you
will
: see thing like "the new salinity std" all over the place. It was really not official
until
: 1978......and.......about 65 years before that was when it was first proposed. Yah
know,
: all the cat and dog fighting took some time LOL. It use to be Chlorinity, where you
: measured the chloride ion content. Hydrometers and refracts have never been the
std..but
: are often used. Std Sea Water Hydrometer is calibrated to 15 C . The old Std was often
: called Copenhagen Sea Water, samples of real water that sat in a fault.. It is now
often
: called Practical Salinity Units (PSU) based on EC ( Electric Conductivity). This
: conductivity std of a sea water is a sample set to a standard KCl solution of 32.43565
: g/Kg @ 15 C and 1 atm.
:
: You can buy REAL Sea Water Std here.....got money LOL
:
: http://www.oceanscientific.co.uk/
:
: Maybe I'll just buy me a couple barrels, drive to the coast and get fresh.