Nickel Skimmer Cone ¿ provides both high matrix tolerance and high sensitivity, standard skimmer cone for Thermo Q/RQ/TQ. Replaces combination of 1311870 and 1318480; and 1311870 and 1318480. Design eliminates the need for removable insert. 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 TG1048-Pt.For Robust plasma conditions, we recommend TG1045-Ni.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001