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					Originally Posted by  mark
					 
				 
				Realize there's variations but I go from the link I put up which in turn references: 
Chemical Oceanography, Second Edition. Millero, Frank J.; Editor. USA. (1996), 496 pp. Publisher: (CRC, Boca Raton, Fla.) 
			
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 yup, lots of variations, posting NSW valuses is useless unless you also post the area and depth it was taken from. personaly that is one of the lowest valuse I have ever seen for Mg, and one of the higher Ca readings.
 
Steve
 
		
	
		
		
		
		
			
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