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					Originally Posted by  Enigma
					 
				 
				The Seachem test kits have a reference sample in them. Maybe someone close to you has some? If not, I could try mailing you some: if I can figure out how best to package it. 
			
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 Thanks for the offer 

I'll buy the Seachem kits if my next bucket is out of whack and then will be sending the Elos kits off for analysis