Understanding Molar Concentration Units
In chemistry and biochemistry, molarity is the standard measure of solute concentration in a solution. When working with biological samples or chemical reactions, we often deal with very small quantities, requiring the use of millimolar (mM) and micromolar (μM) units.
The Relationship Between mM and μM
Both units are derivatives of the standard Molar (M) unit. The metric prefix system defines the relationship between them:
- 1 Millimolar (mM) = 10-3 Moles per liter
- 1 Micromolar (μM) = 10-6 Moles per liter
Because a millimolar is 1,000 times larger than a micromolar, the conversion is straightforward: to go from mM to μM, you multiply the value by 1,000.
Formula:
Conversion Formula:
μM = mM × 1,000