How can I convert a concentration in "mg/ml" to mM?

 Converting a concentration from "mg/ml" to mM requires knowing the molecular weight of the substance you're working with. Here's the formula:

mM = (mg/ml) / (Molecular weight in mg/mmol) * 1000

Steps:

1. Get the concentration in mg/ml: This is the given value you want to convert.
2. Find the molecular weight of the substance: This is usually listed in the datasheet or on a chemical supplier's website. Make sure it's in milligrams per millimole (mg/mmol).
3. Plug the values into the formula: Divide the concentration (mg/ml) by the molecular weight (mg/mmol) and multiply by 1000. This will give you the concentration in millimoles per liter (mM).

Example:

Let's say you have a solution of glucose with a concentration of 10 mg/ml and you want to know its concentration in mM. The molecular weight of glucose is 180.16 mg/mmol.

mM = (10 mg/ml) / (180.16 mg/mmol) * 1000 = 55.51 mM

Important notes:

• Make sure your units are consistent throughout the calculation.
• If the molecular weight is not available in mg/mmol, you can convert it from grams per mole (g/mol) by dividing by 1000.
• This formula assumes you have a solution in water. If the solvent is different, the conversion might be slightly more complex.

you can used online calculator - mg/ml to molarity calculator