D-Torch with quartz outer tube & installation guide, requires choice of injector. Compatible with 700-ES or Vista Axial.A patented, precision-engineered, demountable torch, incorporating a ceramic intermediate tube for greater robustness & demountable outer tube that can be replaced when it fails rather than replacing the entire torch. 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, demountable ceramic outer tube (P/N 501907173). The quartz outer tube is ideal for most applications while the ceramic outer tube is best for high TDS, organics, or HF matrices. Replacement parts include 31-808-2918, 501907139, 501907155, 501907163, GAZ-06.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001