Nickel Skimmer Cone ¿ For Shimadzu 2030 ICP-MS (211-90200-42, 220-95356-85). 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). Replace skimmer cone screws if corroded or worn (SZ5002). 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 samples containing HF, and other highly corrosive samples where acid concentration begin to exceed 5%, we recommend a platinum cone, see catalog number 501907703. For routine samples with better heat transfer, we recommend nickel skimmer with copper base, see catlog number 501907700.Use copper skimmer for standard low-cost option, see catalog number 501907698.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001