Nickel X-Skimmer Cone with Copper Core (1142160) ¿ Suitable for Thermo/Finnigan Neoma MC-ICP-MS, Element 1, 2 & Neptune. For high sensitivity applications. Not recommended for samples containing hydrofluoric acid (HF). Use 10x Magnifier Inspection Tool with Built-In LED Illumination (NC2042261) to inspect cone orifice condition. When not in use, keep cones stored in original packaging for protection.For lowest boron background, semiconductor applications, and samples containing HF along with other highly corrosive samples where acid concentration begin to exceed 5%, we recommend a platinum cone, see catalog number 501907714.For lowest copper background, we recommend 501907706.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001