The Chromatography Calculator app from Tosoh Bioscience is an easy-to-use tool for equations commonly used in HPLC. Including basic calculations for the novice chromatographer to advanced equations used for system suitability and pressure-flow studies, this is a valuable tool for your lab.

-Determine the following values:
total or empty column volume
linear velocity
mobile phase porosity
empty column linear flow rate from volumetric flow rate
volumetric flow rate from empty column linear flow rate
relationship between linear velocity and empty column linear flow rate
theoretical changes in pressure after changing particle size
Ergun Modification of the Blake-Kozeny Equation for pressure-flow

-Also includes:
pressure conversions starting with psi, bar, kg/cm2, kPa and MPa
calculation of the number of theoretical plates
calculation of peak Asymmetry Factor
calculation of tailing factor
calculation of the height equivalent to a theoretical plate (HETP)
calculation of reduced plate height (h)
calculation of chromatographic resolution