1. What is the Cytiva Flow Rate Converter?

Definition: This calculator converts linear flow rate (cm/h) to volumetric flow rate (mL/min) for chromatography columns.

Purpose: It helps researchers and technicians in chromatography work to easily convert between these two common flow rate measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_{mL/min} \) — Volumetric flow rate (milliliters per minute)
• \( Q_{cm/h} \) — Linear flow rate (centimeters per hour)
• 0.01667 — Conversion factor (1/60 × 1)

Explanation: The conversion accounts for both time unit conversion (hours to minutes) and volume/area relationships in chromatography columns.

3. Importance of Flow Rate Conversion

Details: Proper flow rate conversion ensures accurate method scaling, consistent chromatography performance, and reproducible results across different column sizes.

4. Using the Calculator

Tips: Enter the linear flow rate in cm/h. The calculator will automatically compute the equivalent volumetric flow rate in mL/min.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between cm/h and mL/min?
A: cm/h is useful for scaling methods between columns, while mL/min is practical for pump settings and operational use.

Q2: Does this conversion depend on column size?
A: The basic conversion doesn't, but the actual mL/min result will vary with column cross-sectional area.

Q3: When would I need this conversion?
A: When scaling chromatography methods, comparing literature methods, or setting up new purification protocols.

Q4: Is 0.01667 always the correct factor?
A: This is the standard time conversion factor. For precise work, you may need to account for column diameter.

Q5: Can I convert back from mL/min to cm/h?
A: Yes, use the inverse formula: cm/h = mL/min ÷ 0.01667.