Fig. 3
From: Respiration activity monitoring system for any individual well of a 48-well microtiter plate
Illustration of the switching mechanism of the developed μRAMOS technology. a Switch position of the 5/2 valve for providing a under pressure and (b) over pressure above the switching membrane. Two sets of air pumps, capillaries and 5/2 valves are used for switching all 48 inlet valves independently of the 48 outlet valves. Differential switching pressures: - 300 hPa ((a) open valve (blue)), + 600 hPa ((b) closed valve (red)). The pressures are adjusted by the air resistances of the capillaries and the air pump characteristics