... .Materical:silica>99.95% 5.Spectral transmission>90% Ozone free quartz glass tube -Techincal Parameters:OD:1.2mm-800mm Length ... quartz tube,opequa quartz tube,UV-stop quartz tube,ozone-free quartz tube,red/yellow/black/blue/milky white/ corored ... ,U shape -Applications:-Home heating and warming: Heater, cooking, oven, stove, baker. -Industrial drying: Painting, drying apparatus, dyeing, print, products ...