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few powders

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  • few powders

    Some powders are analysed too as could be seen in pictures.

    In case someone wonders why a API can be over 100% pure (like the enanthate) is that the accuracy when messured by HPLC is not optimal. This particular item is also messured by UV. The result of the UV/VIS determination is validated, the method used for HPLC is not. UV/VIS for the Enanthate was 97.6% and thus according to Ph. Eur
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  • #2
    Ronny where from you buy the reference standards for the HPLC?

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    • #3
      All three of these came from the same source?

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