Patent ID: 7384605

Claim:
A fluidics system, comprising: a primary fluid channel comprising an input and an output; an enclosed first reservoir connected to said primary fluid channel input and comprising a first adjustable vent; an enclosed second reservoir connected to said primary fluid channel input and comprising a second adjustable vent; a negative pressure source connected to said primary fluid channel output; an auxiliary fluid reservoir and a connection valve, wherein the auxiliary fluid reservoir is connected in series through the connection valve to an auxiliary input of at least one of the first and second reservoirs; and the system is configured to selectively draw fluid from the auxiliary fluid reservoir into at least one of the first and second reservoirs when the negative pressure source is activated, the connection valve is open, and the respective reservoir is not vented to a pressure source having a pressure less than a pressure of the negative pressure source; wherein the fluidics system is configured to selectively draw at least one fluid from at least one of the first and second reservoirs into the primary fluid channel when the negative pressure source is activated and the respective reservoir is unsealed.