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Semitree

Tools

Eight microfluidics calculators. Each one gives a clean input, an instant result, the formula, and a link to the concept behind it.

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8 tools

Fluid mechanics

Reynolds number

Check whether flow is laminar or turbulent.

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Fluid mechanics

Hydraulic diameter

Effective diameter for non-circular (rectangular) channels.

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Fluid mechanics

Pressure drop

Hagen–Poiseuille pressure drop across a circular channel.

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Fluid mechanics

Flow resistance

Hydraulic resistance of a channel (the electrical analogy).

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Diffusion & mixing

Diffusion time

Estimate how long a species takes to spread by diffusion.

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Droplet

Poisson single-cell loading

Probability of 0 / 1 / 2+ cells per droplet.

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Lab utilities

Unit converter

Convert flow rate, pressure, volume, and viscosity.

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Lab utilities

Syringe pump settings

Convert between syringe plunger speed and flow rate.

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