TFM Microwave Digestion Vessels 55 mL for CEM MARS Xpress System

Overview

The TFM Microwave Digestion Vessels (55 mL) are high-performance, single-use or reusable consumables engineered for compatibility with the CEM MARS Xpress microwave digestion system. Designed specifically for rapid, controlled, and reproducible sample decomposition under elevated temperature and pressure, these vessels utilize ultra-pure polytetrafluoroethylene (TFM™)—a modified fluoropolymer offering superior chemical resistance, thermal stability up to 300 °C, and minimal extractables compared to standard PTFE. Each vessel is precision-machined to ensure dimensional consistency, leak-tight sealing with compatible MARS Xpress rotor gaskets, and uniform microwave energy coupling—critical for achieving accurate and repeatable digestion outcomes in trace metal analysis, environmental testing, food safety, and geological sample preparation.

Key Features

• Material: High-purity TFM™ fluoropolymer—resistant to aqua regia, hydrofluoric acid (HF), and other aggressive reagents commonly used in closed-vessel microwave digestion.
• Volume Capacity: Nominal 55 mL working volume, optimized for 10–30 mL acid mixtures and 0.1–1.0 g solid samples—supporting both high-throughput and high-sensitivity workflows.
• Design Compatibility: Dimensionally matched to CEM MARS Xpress 40-position rotor systems (including configurations for 17, 18, 19, 20, 21, 22, and 40-vessel rotors), ensuring secure seating, pressure containment up to 80 bar, and full integration with the instrument’s real-time pressure/temperature monitoring.
• Manufacturing Traceability: Produced under ISO 9001-certified processes in Jiangsu, China; each batch undergoes rigorous dimensional inspection and blank testing (ICP-MS verified) to guarantee low background levels of Al, Cr, Cu, Fe, Ni, Pb, and Zn (<0.1 ng/g).
• Dual-Use Flexibility: Suitable for single-run applications requiring maximum contamination control or multi-cycle reuse (up to 20 cycles) when cleaned per ASTM D5686 and rinsed with high-purity water (≥18.2 MΩ·cm).

Sample Compatibility & Compliance

These vessels support a broad spectrum of sample matrices—including soils, sediments, plant tissues, animal tissues, polymers, catalysts, and pharmaceutical excipients—enabling complete dissolution prior to elemental quantification by ICP-OES, ICP-MS, or AAS. All vessels comply with key international method frameworks: EPA Method 3051A/3052, ISO 11466, ASTM D5686, and USP . When used within validated MARS Xpress digestion protocols, data generated meets GLP and GMP documentation requirements—including audit trails for pressure/temperature profiles, cycle logs, and operator metadata—as mandated under FDA 21 CFR Part 11 for regulated laboratories.

Software & Data Management

While the vessels themselves are passive components, their performance is fully leveraged through CEM’s iWave™ software platform. This interface enables automated method assignment per vessel position, synchronized pressure/temperature logging at 1-second intervals, and export of raw time-series data in CSV or XML formats for LIMS integration. The consistent geometry and material properties of the NJ-55ml vessels minimize inter-vessel variability—reducing the need for individual calibration factors and improving cross-run comparability in multi-sample batches. Raw data files retain embedded vessel lot numbers and manufacturing date codes for full traceability during regulatory review.

Applications

• Environmental Monitoring: Total recoverable metals in wastewater sludge, fly ash, and contaminated soils per EPA SW-846.
• Clinical & Biological Research: Quantification of essential/toxic elements (e.g., Se, As, Cd, Hg) in serum, urine, and biopsy tissues.
• Food & Agriculture: Digestion of fortified cereals, infant formula, and feed supplements for nutritional labeling compliance (EU Regulation No. 1169/2011).
• Materials Science: Leaching studies of battery cathode materials (NMC, LFP) and rare-earth magnets under standardized acidic conditions.
• Geochemical Analysis: Whole-rock digestion of silicate minerals using HF-HNO₃-HCl mixtures without vessel degradation or fluorosilicate precipitation.

FAQ

Are these vessels certified for use with CEM MARS Xpress instruments?
Yes—NJ-55ml vessels are dimensionally and pressure-rated for full compatibility with all CEM MARS Xpress rotor configurations (17-, 18-, 19-, 20-, 21-, 22-, and 40-position), including OEM safety interlocks and sensor alignment.
What is the maximum recommended operating temperature and pressure?
The TFM material supports continuous operation up to 300 °C and transient pressures up to 80 bar—within the certified limits of the MARS Xpress system’s pressure control architecture.
Do you provide lot-specific certificate of analysis (CoA)?
Yes—each shipment includes a CoA listing blank values (ICP-MS), dimensional verification reports, and TFM resin lot traceability per ASTM E29.
Can these vessels be autoclaved for sterilization between uses?
No—autoclaving is not recommended. Cleaning must follow CEM-recommended protocols: sequential rinse with 10% HNO₃, ultrapure water, and air-drying in Class 100 laminar flow; thermal cycling beyond 200 °C is unnecessary and may accelerate aging.
Is there a difference between “TFM” and “PFA” vessels in this application?
Yes—TFM offers higher crystallinity and lower gas permeability than PFA, resulting in improved long-term seal integrity and reduced risk of volatile loss (e.g., Hg, AsH₃) during high-temperature digestion cycles.