Patent ID: 8294873

Claim:
An exposure method comprising exposing a substrate with exposure light that irradiates the substrate via a liquid, wherein a concentration of an eluted substance in the liquid on the substrate satisfies the condition R W −R P ≦1.0×10 −3 where: R P is a transmittance of the liquid containing an eluted substance eluted from the substrate per 1 mm in an optical path direction of an exposure light, and R W is a transmittance of the liquid that does not contain the eluted substance per 1 mm in the optical path direction of the exposure light; wherein the exposing the substrate with exposure light is performed while supplying the liquid onto the substrate and recovering the liquid from on top of the substrate, and in order to satisfy the condition, at least one of an amount of the liquid supplied or an amount of the liquid recovered per unit time is adjusted.