Quartz Tapered Injector with 1.8mm ID.1.8mm ID tapered quartz injector (50-190-7168, 31-808-2974), designed for organic solvents and non-HF matrices. This quartz injector, with 1.8 mm I.D., is for use with Spectro (Ametek) EOP/SOP, Axial/Radial (Modula, CIROS, Genesis, ARCOS) ICP-OES, not for ARCOS II. The most versatile and suitable for use with aqueous, including HF, and organic solvent-based matrices.Spectro (Ametek) EOP/SOP, Axial/Radial (Modula, CIROS, Genesis, ARCOS) ICP-OES Injectors - Compatible with Glass Expansion Axial D-Torch 50-190-7029 (30-808-3371) and Radial D-Torch 50-190-7023 (30-808-2928). Optional Tapered Quartz Injectors are 2.5 mm 50-190-7252 (31-808-3723) and 3.0mm 31-808-3724, Tapered Alumina Injectors 1.2mm 50-190-7 (31-808-3238), 1.8mm 50-190-7166 (31-808-2963) and 2.4mm 50-190-7214 (31-808-3388). Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001