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ug/l to ng/ml?

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  • ug/l to ng/ml?

    Can I prepare 100ng/ml solution from 10ug/l stock solution?
    Thanks...

  • #2
    Originally posted by Janett View Post
    Can I prepare 100ng/ml solution from 10ug/l stock solution?
    Thanks...
    No. 10g/L is also 10 ng/ml. Your stock is weaker than what you wish to prepare. You need to concentrate it, not dilute it.

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    • #3
      Thanks JohnS, I figure it out yesterday, I used another stock solution.

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      • #4
        Need to convert 1200 nM to ng/mL, the molecular weight is 595.8

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        • #5
          Originally posted by Sreekanth View Post
          Need to convert 1200 nM to ng/mL, the molecular weight is 595.8
          M is a symbol for molar, a concentration of moles per liter, so
          1200 nmol/L x 595.8 g/mol x 1L/1000 mL = 714.96 ng/mL

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          • #6
            Which one of the following stock concentrations (100ug, 500ug or 5mg/ml) can be used to prepare a working solution of final concentration 62uM?

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            • #7
              Originally posted by Janett View Post
              Which one of the following stock concentrations (100ug, 500ug or 5mg/ml) can be used to prepare a working solution of final concentration 62uM?
              M is shorthand for moles per liter. To convert to grams per liter, we need to know the molecular weight of the solute or the chemical formula so we can calculate the molecular weight. There is no way to proceed with the given information.

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