How many μL are in a 1 μmole vial of an NTP at 10 mM concentration? At 100 mM? Posted on by TriLink BioTech The 1 μmole size of an NTP at a 10 mM concentration will have 100 μL of solution and a 100 mM concentration will have 10 μL (0.01 mL) of your NTP solution.