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Dilution


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#1 Bonnie001

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Posted 27 July 2010 - 04:04 AM

Hi there,
I am hoping that someone can help to check that my dilution strategy is ok. I am starting in vitro experiments on a plant based protein soon and still am confused about the dilution strategy. I have been taking 1mg of this compound and diluting it into 1ml of my culture medium buffer. This would give me a 1mg/ml stock solution.
I was than going to add into well plates, buffer medium and different amounts of my stock solution to give me varying concentrations. For example I am hoping to have 50uL, 100uL, 250uL, 500uL and 1000uL exposure concentrations. To do this I would take ie: for the 1000uL concentration, 10uL of my stock solution and add this to 90uL of buffer medium- is that right? And for the 500uL concentration I would take 5uL of stock solution and add it to 95uL of buffer medium.
If any one can help me with this it would be very much appreciated!
kind regards....

#2 pito

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Posted 27 July 2010 - 04:53 AM

Hi there,
I am hoping that someone can help to check that my dilution strategy is ok. I am starting in vitro experiments on a plant based protein soon and still am confused about the dilution strategy. I have been taking 1mg of this compound and diluting it into 1ml of my culture medium buffer. This would give me a 1mg/ml stock solution.
I was than going to add into well plates, buffer medium and different amounts of my stock solution to give me varying concentrations. For example I am hoping to have 50uL, 100uL, 250uL, 500uL and 1000uL exposure concentrations. To do this I would take ie: for the 1000uL concentration, 10uL of my stock solution and add this to 90uL of buffer medium- is that right? And for the 500uL concentration I would take 5uL of stock solution and add it to 95uL of buffer medium.
If any one can help me with this it would be very much appreciated!
kind regards....


1mg/ml = 1000g/ml = 1000g/1000l or 1 g/l

if you take 10l of this stock solution and add this to 90l buffer, then how do you hope to have 1000l in that medium?

I do not understand this...

And to be honest, I do not understand why you work with l ?

Normally when you make such a dilution or experiment the aim is to have (for example) 10g of substance X per plate, 1g per plate, ....

Not l ....

If you don't know it, then ask it! Better to ask and look foolish to some than not ask and stay stupid.


#3 BryanC

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Posted 27 July 2010 - 11:27 AM

Yeap. You are listing volumes there and not concentrations, so it's kind of hard to know what you are asking.




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