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    a stock solution is diluted serially by 1 in 25, then 1ml of this solution was added to 20mL of buffer solution, what is the overal dilution factor? what is the main problem with the 2nd dilution

  • #2
    Re: help

    Dilution factor 500? i.e. final solution 1/500th strength of original.

    I would have thought main problem with second dilution is that you're getting a homeopathic stylee stregth to work with.

    Do I pass?
    Linnear MRPharmS

    Foetal Alcohol Spectrum Disorder: The biggest cause of brain damage and 100% preventable.

    In pregnancy: 1 fag is not safe, 1 x-ray is not safe and 1 drink is not safe.



    For handy pharmacy links try
    pharmacistance.co.uk

    If you like my posts or letters in the journal try my books!
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    • #3
      Re: help

      I don't pass do I?

      1ml added to 20ml not 1ml in 20ml. Bugger!
      Linnear MRPharmS

      Foetal Alcohol Spectrum Disorder: The biggest cause of brain damage and 100% preventable.

      In pregnancy: 1 fag is not safe, 1 x-ray is not safe and 1 drink is not safe.



      For handy pharmacy links try
      pharmacistance.co.uk

      If you like my posts or letters in the journal try my books!
      eloquent-e-tales

      Comment


      • #4
        Re: help

        Originally posted by Linnear View Post
        I don't pass do I?

        1ml added to 20ml not 1ml in 20ml. Bugger!
        Dunno - you have now successfully answered the second part of the question ;-)


        Jeff

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        • #5
          Re: help

          You have problem with the 2nd dilution?
          It's impossible!

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