G Force In Centrifuge Calculator

G Force Formula:

\[ G = (1.118 \times 10^{-5}) \times RPM^2 \times r \]

G Force (g):

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1. What is a G Force in Centrifuge Calculator?

Definition: This calculator estimates the relative centrifugal force (RCF) or "G force" experienced in a centrifuge based on rotational speed and radius.

Purpose: It helps laboratory technicians and researchers determine the effective force applied to samples in centrifugation processes.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ G = (1.118 \times 10^{-5}) \times RPM^2 \times r \]

Where:

\( G \) — Relative centrifugal force (g-force)
\( RPM \) — Rotational speed (revolutions per minute)
\( r \) — Rotor radius (centimeters)

Explanation: The formula calculates the acceleration relative to gravity by squaring the RPM, multiplying by the radius, and applying a constant conversion factor.

3. Importance of G Force Calculation

Details: Accurate G force calculation ensures proper sample separation, prevents damage to sensitive materials, and allows for protocol standardization.

4. Using the Calculator

Tips: Enter the centrifuge speed in RPM and the rotor radius in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the constant 1.118 × 10^-5?
A: This converts RPM and radius in cm to g-force, accounting for gravitational acceleration (9.81 m/s²).

Q2: How do I measure the rotor radius?
A: Measure from the center of rotation to the bottom of the centrifuge tube when in horizontal position.

Q3: Why is RPM squared in the formula?
A: Centrifugal force increases with the square of rotational speed (angular velocity).

Q4: What's a typical G force range?
A: Common ranges are 1,000-15,000g for benchtop centrifuges, up to 100,000g for ultracentrifuges.

Q5: Does tube angle affect the calculation?
A: No, this formula calculates maximum force at the bottom of the tube regardless of angle.