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					Originally Posted by JHG
					
				 
				Thanks for the tip on calibrating my refractometer, but I was actually referring to my pH meter.  Do you buy your distilled water from a pharmacy, i.e. Shoppers Drug Mart, etc? 
			
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 Sorry, I didn't realize that there was some ph meter talk in this thread also.(No wonder I was confused as to why you where using a refractometer on your fresh water.  I thought maybe for brackish or something.)
Distilled water is available at most pharmacies. (Allthough I also use 0 ppm RO/DI water sometimes.)  
