A liquid recovery system is used by an immersion exposure apparatus. Also disclosed are insulation compositions comprising a C2 to C8 alpha olefin in combination with a polyethylene homopolymer together with, optionally, one or more hindered amine light stabilizer and a liquid cresol antioxidant. Then a basic equation for reflectance is determined by deriving a coefficient k, utilizing a known reflectance of an object of which reflectance is to be estimated. The anchor profile or weatherstrip profile, which is connected in such a way that it is displaceable, is provided with at least one weather-strip reception device.