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Since Michael was so desparate for help, I did a quick web search
of the EPA's site and got the following articles (URLs included):
Salinity by Conductivity and Hydrometer : A METHOD COMPARISON
by Peter Bergstrom
Salinity Testing Methods (first section reproduced below)
by Steve Wildberger
What is Salinity?
Salinity is defined as the total amount (grams) of solid material
dissolved in a kilogram of seawater when all the carbonate has been
converted to oxide, all bromine and iodine replaced by chlorine, and all
organic matter completely oxidized. It is expressed as g/kg or parts per
thousand (ppt or o/oo).
Seawater is a very complex mixture of over 100 different constituents, but
six ions account for over 99% of the dissolved material. In the ocean,
these six ions are very well mixed and present in nearly constant
proportions: chloride (Cl-), 55.0%; sodium (Na+), 30.6%; sulfate (SO4-2),
7.7%; magnesium (Mg+2), 3.7%; calcium (Ca+2), 1.2%; and potassium (K+),
If I add 1/2 tsp/Gallon of salt to my tank water and assuming
that: a) My original water had no other dissolved salts (ha!)
b) 1 tsp of salt = 5 gm
Using the above formula, I get a salinity of 0.65g/Kg (approx)
Does this help?
ps: I still think "just right" is a better answer! ha ha ha
On Sat, 10 Oct 1998 Moontanman at aol_com wrote:
> Come on! I really need some help here.
Sajjad Lateef ~ <;))>< ~~ ~~ <http://www.eecs.uic.edu/~slateef/>
sajjad at acm_org ~~ ~~ <;))>< ICQ# 13114451