Use Specific Membrane Capacitance when you need to compute specific membrane capacitance in microfarads per square centimetre as total membrane capacitance divided by membrane area. Enter Membrane capacitance and Membrane area using the definitions and units below so the result can be reproduced.

Membrane capacitance

A finite measured or assumed value, expressed in µF.

Membrane area

A finite measured or assumed value, expressed in cm².

The published tool contract uses this rule: Compute specific membrane capacitance in microfarads per square centimetre as total membrane capacitance divided by membrane area.

Specific membrane capacitance

The calculated specific membrane capacitance in µF/cm².

A ratio or percentage can conceal the scale of its numerator and denominator and becomes sensitive to measurement error when the denominator is small.

Retain the original Membrane capacitance and Membrane area values and their units alongside the result. CMS Percent is useful when you instead need to compute cell membrane stability as a percentage by comparing the control conductivity ratio to the treated conductivity ratio, control divided by treated times one hundred, clamped to the range zero through one hundred. Membrane Time Constant provides another view by helping you compute the passive membrane time constant tau = R x C, converting megaohm-microfarads (seconds) to milliseconds.

• CMS Percent

  Compute cell membrane stability as a percentage by comparing the control conductivity ratio to the treated conductivity ratio, control divided by treated times one hundred, clamped to the range zero through one hundred.

• Membrane Time Constant

  Compute the passive membrane time constant tau = R x C, converting megaohm-microfarads (seconds) to milliseconds.

• Specific Growth Rate

  Calculate the specific growth rate in inverse hours from two counts.