This mechanism is designed for the rapid & accurate counting of bacterial & moulded colonies in open or closed petri dishes, The digital display allow counts up to 4 digit using just felt tip pen. There is an audible confirmation of each count to give you confidence in your measurements. To allows optimum viewing of colonies there is a 100 mm dia magnifier for glare free illumination. Adjustable focusing rod allows a magnifier to be raised or lowered &rotates 360° for easy access to culture plate A zero/reset control switch is located next to the display. This is mains operated with built in stabilizer. |