Nickel Micro-Skimmer Cone, Xs, Copper Core (3200860) ¿ Suitable for Thermo/VG X-Series ICP-MS. Provides both high performance and sensitivity. Suitable for most common applications (e.g., routine aqueous environmental samples, <5% acid matrix, non-HF, non-organic). Not recommended for samples containing hydrofluoric acid (HF). Use 10x Magnifier Inspection Tool with Built-In LED Illumination (NC2042261) to inspect cone orifice condition. Use Skimmer ConeGuard (70-803-1028) to protect cone threads during cleaning. When not in use, keep cones stored in original packaging for protection.For samples containing HF, and other highly corrosive samples where acid concentration begin to exceed 5%, we recommend a platinum cone, see catalog number 501907721.For high matrix tolerance, we recommend 501907723.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001