What is the difference between a Fluxpak and a sensor cartridge?

A sensor cartridge is a component of a Fluxpak. A Fluxpak consists of sensor cartridges (for use during the XF assay), utility plates to hydrate sensor cartridges, XF calibrant solution, and XF cell culture micoplates. The number of each component will vary depending on the type of Fluxpak ordered. Cartridges cannot be purchased separately - they must be purchased as components of a Fluxpak.