Dehyrdoxyl Ozone Free Quartz Glass Tube OD range 2.2——80mm, Dehyrdoxyl UV5 l Ozone Free Quartz Glass Tube,clear,cut surface slight purple.The product blocks wavelenghth<220nm,while transmit over 87% in 253.7nm.

Good for all kinds of germicidal lamps.      

Its OH content is available as the customer‘s requirements.