standard quartz tube, OH content : <2ppm ,5ppm, 8ppm 10ppm It is widely applied ... , stage lamp, thermocouple, printer lamp, sleeve for water treatment lamp, quartz utensils and pipes, etc. Range of ODODWTSidingEllipsticityCamber/1220mm≤5mm±2 ... 1.0mm Lights transmittance(table ) nm≤220255280315350380590780%89919393939393.293.4 quartz tube