Excess moisture in the absorber and patient circuit is one by-product of low flow anesthesia where
there is little patient gas exhausted through the scavenging systems and the exhaled CO2 goes through
the absorber with almost no dilution. Since water is a by-product of CO2 reacting with the absorbent,
low-flow means more water. As the warm moist gas moves in the circuit, moisture condenses within
the breathing system.