120240 V, includes instrument, power supply, USB flash drive, USB cable, 30 dual-chamber counting slides (60 counts), 1.5 ml trypan blue Use the TC20 automated cell counter for accurate, reproducible total counts of mammalian cells and live/dead ratios in one simple step — get results in only 30 sec. Eliminate the tedious task of counting cells with a microscope and hemocytometer and reduce cell count variability. Includes the following: TC20 automated cell counter USB flash drive 30 dual-chamber counting slides (60 counts) 1.5 ml trypan blue dye