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crimsonvice

KHD Reagent Shelf Life

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@GHL

Does the KH Director Reagent have a shelf life? I picked up a used one, and the guy gave me four 500 ml bottles of reagent. I got everything set up last night and it seems like the amount used to test is minimal. If I am not testing 400 times a day, four bottles will last me a long time.

Also, is there an ideal water sample volume? My sample tube is 24 mls, and my sample volume is 75 mls. I am producing results comparable to my Hanna Checker, so I am assuming this is sufficient. What are your recommendations? 

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Sample size comes down to a matter of preference.

80ml is the standard option.

 

If you wanted to bump the water sample up to 100ml for example, it will increase the accuracy of the test result to 0.1dkH

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