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I have 2 chemicals, A & B. Note: both do not contain buffer salts.
Chemical A expires 1 week later.
Chemical B expires next year.
I prepare solution C (general laboratory reagent)containing Chemicals A & B.
When assigning the expiry date of solution C, does this mean the expiry date should not exceed 1 week because Chemical A expires l week later?

Please help. Thanks.

  • Chemistry -

    My personal opinion is that you don't know. Part of the answer depends upon how chemical A decomposes and part depends upon the makeup of chemical C.

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