am I using the right units?

Hello,

Probably a really simple question for any mathematician, but not so easy for the confused biochemist needing help.

I'm looking at the concentration of a compound produced by a microbial culture that is measured in ng L ^{-1}. I want to express the concentration of this compound relative to the dry weight of this culture (DW) which I have measured in mg L^{-1}. Does this mean my units will be ng L^{-1 }mg L^{-1 }DW? Or can it be simplified to ng mg L^{-1 }DW?

Any help would be much appreciated! Thanks

Re: am I using the right units?

Hey blue00.

If you are expressing one thing relative to another you usually are looking [a]/[b] where [a] is the units for a and [b] is the units for b.

So a relative to b unit wise is [a]/[b] = m/n or mn^(-1). If m can be written as a function of n (or vice-versa) then this can be simplified.

Re: am I using the right units?

yes i also want to say the same thing.

thanks

packersm

Re: am I using the right units?

very nice information. thanks a lot for this.

thanks

99th