4 replies to this topic

[noyara]

Dear All
G'day..

I'm asking about Measurement Units of DNA,

In some journals & websites there are some units used for DNA and RNA calculation, I don't know what its mean, and when I search about it, I don't find good information
I hope if you know about it..

For example:
this phrase:

Fill in answers to 1–3 and either 4 (for converting ng/ml to pM) or 5 (for converting pM to ng/ml).
what mean pM..?

and also this one:


What is the specific activity of your radiolabeled nucleotide stock (Ci/mmol)?

What is the concentration of your radiolabeled nucleotide stock (mCi/ml)?
what means by mCi, Ci

and many others....
is there any website, pdf, books or anything that describe the meaning?

Waiting for your kind response,..
And regards

[hobglobin]

This are commonly used abbreviations for the conversion of concentration units, in your examples
nanograms/microlitre to picomol/litre (p = pico = 10^-12; M = mol/litre)

Ci is the abbreviation for "Curie" a unit of radioactivity, defined as 1 Ci = 3.7×10¹⁰ decays per second or becquerels. mCi is then microCurie

The Lab-FAQs from Roche might answer many of your questions

[Trof]

hobglobin, on Jul 12 2010, 08:01 PM, said:

Ci is the abbreviation for "Curie" a unit of radioactivity, defined as 1 Ci = 3.7×10¹⁰ decays per second or becquerels. mCi is then microCurie

Isn't mCi rather millicurie than microcurie? Microcurie would be μCi or uCi.

[pito]

I think its is indeed milli and not micro (µ)

[hobglobin]

pito, on Jul 13 2010, 03:03 PM, said:

I think its is indeed milli and not micro (µ)

Oppppssss you are of course right...I shouldn't post such stuff during an overheated evening...