The present invention provides a durable liquid housing container and a
durable liquid supply apparatus which use a gas-liquid separation
membrane. Thus, a gas-liquid separation membrane (2) located at an air
vent in a liquid housing container (1) includes a fibril portion (2A)
composed of fibrous portions and an annular node portion (2B) which
bundles the ends of fibrous portions of the fibril portion (2A) and which
is closed so as to surround the fibril portion (2A).