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|  LF: saline refractometer As stated above, preferably local (vancouver) Thanks | 
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			#2  
			
			
			
			
			
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|   I bought the Instant ocean hydrometer from JL they said I could use it then bring in a water sample and they would test it with a refractometer so I could calibrate it - then you can save your money for something else ! and buy a proper refractometer later if you find a deal or they go on sale. | 
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			#3  
			
			
			
			
			
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|   sounds good!  thanks! | 
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