Please help

[raida]

I have 5mM of substace and for my work I need 1nM in 600ul. Can you please explain to me how to do it.
Thank you.

[raida]

I have 5mM of solution and for my work I need 1nM in 600ul. Can you please explain to me how to do it.
Thank you.

[chemisttree]

First you have to understand that the concentratio expression 'nM' is independent of volume (600 uL). You need 1 nM? What would that be in 'mM'?