Automated colony counters and zone sizers, for food, pharmaceutical, water, environmental and educational microbiology applications including inhibition zones, antibiotic susceptibility testing, radial haemolysis, AMES Test, Spiral Plating, DEFT and chromogenic colour colony counting. Our key products, ProtoCOL, ProtoCOL SR, ProtoCOL HR, ProtoCOL RGB, ProtoCOL XR, ProtoZONE, aCOLyte Click’n’Count and aCOLyte SuperCount, provide the user with sophisticated hardware and software driven by a simple, easily understood interface.