Free calculators and planners to design an experiment before you spin. All run in your browser; no membrane parameters are needed for the polarisation tools.
Predicts the polarisation factor, wall concentration, mass-transfer coefficient and intrinsic rejection of your solute in a CentrivaLab cartridge, and the rotor speed for a target mean pressure.
Use it when: You know the solute, concentration and flux you expect and want to see how strong polarisation will be.
Converts between rotor speed and mean transmembrane pressure for each cartridge and rotor.
Use it when: You only need the rpm for a target pressure, or the pressure at a given rpm.
Starts from a spiral-wound module test (size, flux, recovery) and returns the rpm and starting concentration that give the same wall concentration in a CentrivaLab cartridge.
Use it when: You want to reproduce a module-scale test at screening scale.
Plans a batch (concentration, diafiltration or solvent exchange) as a sheet of six tubes, one per time point, with the C·J curve and room to re-enter measured results.
Use it when: You need time-resolved information from a batch process.
Puts the O-CMF side by side with a stirred cell and a spiral-wound module for the same solute, flux and conditions.
Use it when: You want to see how your current device compares with the CentrivaLab cartridge.
The same comparison for organic solvents and macromolecules, with solvent, temperature and solute properties; PEG, globular and small solutes, solvent mixtures with water.
Use it when: You work in organic solvent nanofiltration, or with PEG, peptides or proteins.
Where to start: to reproduce a module-scale test, use the Test Planner; for a batch process, the Batch Planner; to estimate polarisation for a known solute, the CP Calculator. The OSN property guide documents the physical properties behind the OSN Simulator.
