The Scepter Cell Counter is a handheld automated device that can be used to count cells, monitor cell diameter and volume, and be used to check the health and quality of cellular populations from one culture to the next.
Ongena, K., Das, C., Smith, J. L., Gil, S., Johnston, G. Determining Cell Number During Cell Culture using the Scepter Cell Counter. J. Vis. Exp. (45), e2204, doi:10.3791/2204 (2010).