1. What is pmol to μg Conversion?

The pmol to μg conversion is used to convert between picomoles (amount of substance) to micrograms (mass) for a specific compound, using its molecular weight.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( pmol \) — Amount in picomoles (10⁻¹² moles)
• \( MW \) — Molecular weight in grams per mole (g/mol)
• 1,000,000 — Conversion factor (10⁶ μg/g × 10⁻¹² mol/pmol)

Explanation: The formula accounts for both the molecular weight of the substance and the conversion between moles and mass units.

3. Importance of Molecular Weight

Details: The molecular weight is crucial for accurate conversion between molar and mass units, as different compounds have different masses per mole.

4. Using the Calculator

Tips: Enter the amount in pmol and the molecular weight in g/mol. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why do we divide by 1,000,000?
A: This accounts for both the conversion from pmol to mol (10⁻¹²) and from g to μg (10⁶).

Q2: Where can I find molecular weight?
A: Molecular weights can be found in chemical databases, product specifications, or calculated from the chemical formula.

Q3: Can I use this for proteins?
A: Yes, but use the average molecular weight of the protein (including any modifications).

Q4: What's the difference between pmol and μg?
A: pmol measures number of molecules, while μg measures mass. The conversion depends on the molecular weight.

Q5: How precise should my MW be?
A: Use at least 2 decimal places for small molecules, and whole numbers for large proteins.