Binzhenghong DC46-3088 PFA Digestion Vessel (60 mL Transparent Digestion Cup) for Graphite Block Digesters

Overview

The Binzhenghong DC46-3088 PFA Digestion Vessel is a high-purity, chemically inert 60 mL transparent digestion cup engineered specifically for use with modern graphite block digestion systems. Constructed from perfluoroalkoxy alkane (PFA), this vessel leverages the superior material properties of fluoropolymer chemistry—namely ultra-low extractables, exceptional resistance to aggressive reagents (including concentrated HNO₃, HF, HCl, and aqua regia), and thermal stability up to 260 °C under open-vessel conditions. Unlike conventional PTFE or glass digestion tubes, PFA offers optical clarity without compromising chemical resilience, enabling real-time visual monitoring of digestion progress, meniscus positioning, and volume consistency during sample preparation. Its design aligns with standardized sample introduction workflows in elemental analysis laboratories performing ICP-OES, ICP-MS, AAS, and EPA Method-compliant digestion protocols (e.g., EPA 3050B, 3051A, 3052). The vessel functions as a single-use or reusable consumable within open-vessel, non-pressurized digestion platforms—eliminating cross-contamination risks associated with multi-step transfer and supporting GLP-aligned trace metal analysis.

Key Features

• Optically transparent PFA construction enables direct visual assessment of digestion status, liquid level, and precipitate formation without vessel removal.
• Integrated volumetric graduation markings (e.g., 10–60 mL) laser-etched on the tube body allow precise in-vessel dilution and final volume adjustment—reducing handling steps and contamination potential.
• Dimensionally optimized for compatibility across major graphite digester platforms: Leibtech ED/EHD/DigiBlock TF-36 & TF-16 series; Gendanna DS-360; Pretach ST-60; Ruike, Tuozhiming, Haineng, Dingtai, and OptoLab systems.
• Customizable closure options include reflux caps, handle-integrated caps, dual-function caps (reflux + venting), flared-mouth designs, threaded sealing caps, and flat-top caps—all machined from matching PFA stock to maintain system integrity.
• Laser-engraved alphanumeric identification on both cap and tube body ensures unambiguous sample tracking throughout digestion, cooling, and analysis stages—critical for audit-ready workflows under ISO/IEC 17025 and FDA 21 CFR Part 11 requirements.
• Consistent outer diameter (28–29 mm) and total height (135 mm) ensure uniform thermal coupling across heating blocks, minimizing inter-vessel temperature deviation and improving digestion reproducibility.

Sample Compatibility & Compliance

The DC46-3088 vessel supports digestion of diverse matrices including soils, sediments, biological tissues, food products, polymers, and environmental water filters. Its PFA composition meets USP Class VI biocompatibility standards and complies with ASTM D4327 (ion chromatography sample prep) and ISO 11885 (determination of elements in water by ICP techniques). It exhibits negligible background contributions for As, Cd, Cr, Cu, Ni, Pb, and U (<0.1 ng/mL leachate after 24 h at 120 °C in 5% HNO₃), satisfying stringent detection limit requirements for regulatory testing. All vessels undergo batch-certified cleaning validation (acid-washed, ultrasonicated, and dried in Class 100 cleanroom conditions) prior to packaging.

Software & Data Management

While the vessel itself is a passive consumable, its traceability features integrate seamlessly with LIMS and electronic lab notebook (ELN) systems. Laser-etched identifiers support barcode or QR code labeling for automated sample logging. When used with instrument-integrated digestion software (e.g., Leibtech Digilab Suite or Gendanna SmartDigest), vessel-specific calibration and usage history can be linked to analytical runs—enabling full chain-of-custody documentation required for GLP/GMP audits and ISO 17025 accreditation.

Applications

• Routine acid digestion of environmental samples per EPA Methods 3050B (sediments/soils), 3051A (microwave-assisted), and 3052 (high-pressure).
• Biological tissue digestion for clinical metallomics and toxicology screening.
• Food safety testing for heavy metals (Cd, Pb, Hg, As) in accordance with EU Commission Regulation (EC) No 1881/2006.
• Geochemical reference material analysis (e.g., NIST SRM 2710a, GBW 07401) requiring ultra-low blank performance.
• Method development for novel digestion protocols involving mixed-acid systems or low-volume micro-digestion strategies.

FAQ

What is the maximum safe operating temperature for this PFA digestion cup?
The vessel is rated for continuous use up to 260 °C under open-vessel (non-pressurized) conditions. For applications requiring sealed operation, consult the cap design specifications—threaded caps with controlled venting are available for elevated-temperature workflows.
Can these cups be reused, and what is the recommended cleaning protocol?
Yes, they are designed for multiple uses. Rinse immediately post-digestion with deionized water, followed by soaking in 5% nitric acid for ≥2 hours. Gently scrub interior with PFA-compatible soft brushes; avoid abrasive tools. Dry thoroughly in a laminar flow hood or on a pre-cleaned graphite block at 80 °C before reuse.
Do you provide certificates of analysis (CoA) or lot-specific blank data?
Yes—each production lot undergoes rigorous blank testing per ASTM D5673. CoA includes measured background concentrations for 22 elements and confirmation of dimensional tolerances, transparency grade, and surface defect absence.
Is custom sizing or OEM branding available?
Yes. Binzhenghong supports dimensional customization (e.g., OD, height, volume), alternative graduation schemes, and private-label laser marking—including integration with customer ERP/LIMS ID schemas.