... Good light transmittance Certification: ISO 9001, ISO14001, OHSAS18001This large diameter quartz tube has the typical characteristics of hiht purity ... 5×10107×1010permittivity(@1MHZ)3.755.86 Application: This large diameter quartz is widely used in halogen lamps, ... lamp, automobile lamp, stage lamp, thermocouple, copiers lights, water treatment lamp casing, all kinds of quartz vessels, pipelines and ...