conversion

[restes]

I need a 30 mg/ml solution. I can purchase a 0.5mM solution (MW 292.24) Can you tell me how to make the final solution from the 0.5mM solution?

[JohnS]

Originally Posted by restes

I need a 30 mg/ml solution. I can purchase a 0.5mM solution (MW 292.24) Can you tell me how to make the final solution from the 0.5mM solution?

Your soluition is too dilute 0.5 mM means 0.5 mmol/L. The molar mass is 292.24 g/mol, 146 mg/L.

Your 30 mg/mL solution is 30 g/L, about 200X more concentrated.