The CyFlow Counter is a benchtop Flow cytometer dedicated to CD4 and CD4% enumeration. Its compact size allows for easy placement within a laboratory or alongside patients. Equipped with AlignFree technology, the installation of this device is quick and straightforward (setup time < 5 minutes) as its complete optical system is designed as one solid metal block. This instrument does not require reference beads for cell counting, as it utilizes true volumetric absolute counting (TVAC) technology. Additionally, the instrument features a built-in thermal printer for convenient result printing.