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I have had a Tetratest Laborett for about 2-3 years now. I know the reagents have a shelf life, but I don't see any dates on any of the bottles or packaging. Can anyone help? Thanks.
I agree with Tankgirl. You never know how long the test kit sat in the warehouse or on the store's shelf before you actually took it home. Anything older than a year should be replaced, just to be on the safe side.