100% Nickel Sampler Cone ¿ For Thermo/Finnigan Element 1, 2 & Neptune ICP-MS. Use for lowest Cu background, and suitable for most common applications (e.g., routine aqueous samples, <5% acid matrix, non-HF, non-organic). Not recommended for samples containing hydrofluoric acid (HF). Use a new Graphite Sampler Cone Gasket (501907717) each time the cone is re-installed, even if it¿s the same cone. 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 and semiconductor applications, we recommend a platinum cone, see catalog number 501907711.For high sensitivity applications and low matrix containing samples, we recommend Nickel Jet Sampler, see catalog number 501907709.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001