PFA Inert Sample Introduction Kit for Thermo Scientific Element 2 and Neptune Multi-Collector ICP-MS

Overview

The Savillex PFA Inert Sample Introduction Kit (Model 850-011-100706) is a fully integrated, ultra-high-purity sample introduction system engineered specifically for demanding isotopic and trace elemental analysis applications on Thermo Scientific Element 2 high-resolution inductively coupled plasma mass spectrometers (HR-ICP-MS) and Neptune multi-collector ICP-MS (MC-ICP-MS) instruments. Constructed entirely from perfluoroalkoxy (PFA) polymer — a material selected for its exceptional chemical inertness, low extractables, and resistance to aggressive hydrofluoric acid (HF) and nitric acid (HNO₃) matrices — this kit eliminates memory effects, minimizes blank contributions, and ensures reproducible transport efficiency across ultra-trace (<10 fg g⁻¹) and high-precision isotopic ratio measurements. The system operates on the principle of pneumatic nebulization coupled with a thermally stabilized, low-dead-volume PFA spray chamber, enabling stable aerosol generation and efficient desolvation while preserving isotopic integrity and minimizing polyatomic interferences.

Key Features

• Full-PFA construction including spray chamber, detachable end cap with O-ring seal, drain connector, injection tube, and associated fittings — eliminating metal or glass surfaces that may adsorb or leach analytes
• Dual-channel design supports simultaneous introduction of sample and internal standard or matrix-matched calibration solution, enhancing real-time drift correction and signal normalization
• Integrated make-up gas port enables precise control of carrier gas flow and aerosol drying kinetics, critical for optimizing sensitivity and oxide formation ratios (e.g., CeO⁺/Ce⁺)
• 6 mm outer diameter nebulizer inlet accommodates standard concentric or microflow nebulizers (e.g., PFA MiraMist, ESI SC-FAST) without adapter requirements
• All PFA components pre-cleaned in ultra-pure HNO₃/HF solutions under cleanroom conditions (Class 100), certified to <0.1 pg g⁻¹ blank levels for key isotopes (e.g., U, Pb, Nd, Hf)
• Includes quartz torch optimized for Element 2 and Neptune plasma stability, plus dedicated PFA support stand and syringe holder for consistent positioning and reduced vibration coupling

Sample Compatibility & Compliance

This kit is validated for use with aqueous, HF-dissolved geological samples (e.g., silicates, zircons), high-purity semiconductor etchants, nuclear fuel cycle materials, and environmental reference standards requiring sub-part-per-quadrillion detection limits. It meets ASTM D5673-22 (standard test method for determination of trace elements in water by ICP-MS), ISO/IEC 17025:2017 requirements for measurement traceability, and supports GLP-compliant workflows when paired with instrument software audit trails. The PFA architecture inherently complies with USP / elemental impurities guidelines and FDA 21 CFR Part 11 data integrity expectations when used within validated laboratory information management systems (LIMS).

Software & Data Management

While hardware-based, the kit interfaces seamlessly with Thermo Scientific Qtegra Intelligent Scientific Data Solution (ISDS) software. Its consistent aerosol delivery characteristics improve peak shape reproducibility and reduce integration uncertainty, directly enhancing the robustness of time-resolved data acquisition modes (e.g., transient signal analysis for laser ablation). All configuration parameters — including nebulizer gas flow, make-up gas settings, and dwell times — are stored within Qtegra method files, supporting full method traceability and revalidation per ISO/IEC 17025 clause 7.2.2. No firmware or driver installation is required; mechanical compatibility ensures plug-and-play integration.

Applications

• High-precision U–Pb, Lu–Hf, Sm–Nd, and Pb isotopic ratio geochronology in zircon and apatite
• Isotope dilution mass spectrometry (IDMS) for certified reference material (CRM) characterization
• Ultra-trace analysis of actinides (Pu, Am, Cm) in environmental monitoring and safeguards verification
• Multi-element quantification in high-salinity brines and HF-digested seawater samples
• Method development for low-blank geochemical laboratories pursuing ISO/IEC 17025 accreditation

FAQ

Is this kit compatible with Thermo Scientific iCAP RQ or iCAP TQ ICP-MS systems?
No — this kit is mechanically and functionally optimized for Element 2 and Neptune platforms only. The spray chamber geometry, torch interface, and gas routing are not interchangeable with quadrupole-based instruments.
Can the PFA spray chamber be baked or subjected to elevated temperatures?
PFA has a continuous service temperature limit of 260 °C; however, thermal cycling above 120 °C is not recommended due to potential dimensional instability and seal degradation. Operation at ambient or mildly heated (≤40 °C) conditions is standard practice.
Does the kit include a nebulizer?
No — the kit includes the spray chamber assembly, end cap, drain connector, injection tube, quartz torch, stand, and syringe holder. Nebulizers must be selected separately based on application requirements (e.g., PFA MiraMist for low uptake, ESI SC-FAST for high sensitivity).
How often should the O-rings be replaced?
Savillex recommends replacing fluorocarbon O-rings every 6 months under routine use or immediately following exposure to concentrated HF (>5 % v/v) to maintain leak-tight integrity and prevent vacuum loss in the interface region.