Base and Inner Tube for D-Torch. Compatible with Glass Expansion D-Torch for Thermo PRO Radial, and 6000/7000 Duo or Radial Series ICP-OES.A patented, precision-engineered, demountable torch, incorporating a ceramic inner tube for greater robustness. D-Torch also features an interchangeable injector, allowing installation of a specific injector, whether it be for aqueous (~2.0mm ID), organics (<2.0mm ID), high TDS (>2.0mm ID) or HF (alumina). Compatible with all EMT injectors.The D-Torch is the only design with an optional ceramic outer tube (31-808-3836). The quartz outer tube for the Thermo PRO Radial and 6000/7000 Radial (50-169-4688) and Thermo 6000/7000 Duo (31-808-2840) are ideal for most applications while the ceramic outer tube is best for high TDS, organics, or HF matrices. Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001