Binzhenghong M36-Compatible PTFE Digestion Vessels (50 mL) with Reflux Cap
| Brand | Binzhenghong |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Region Classification | Domestic (China) |
| Model | M36-Compatible |
| Pricing | Available Upon Request |
Overview
The Binzhenghong M36-Compatible PTFE Digestion Vessels are precision-engineered laboratory consumables designed for high-temperature open-vessel acid digestion and sample preparation in environmental, geological, food safety, and regulatory testing laboratories. Constructed entirely from high-purity polytetrafluoroethylene (PTFE), these 50 mL digestion tubes operate reliably across a wide thermal range—from ambient temperature up to 250 °C under non-pressurized (open or reflux) conditions. Unlike glass or quartz alternatives, PTFE exhibits near-zero adsorption, exceptional chemical inertness against concentrated HNO₃, HF, HCl, and aqua regia, and mechanical resilience to thermal shock during repeated heating–cooling cycles. The vessels are specifically dimensioned to interface seamlessly with M36-series block digesters and hot blocks—ensuring uniform heat transfer and stable positioning during extended digestion protocols.
Key Features
- Material integrity: Virgin-grade PTFE with no fillers, black specks, yellow discoloration, or microcracks—certified per ASTM D4894 for fluoropolymer purity and consistency.
- Thermal stability: Continuous service up to 250 °C in open or reflux configuration; optional vented threaded caps available for controlled off-gas release during elevated-temperature applications.
- Dimensional accuracy: Outer diameter 28–29 mm, total height 135 mm, nominal volume 50–60 mL—optimized for compatibility with standard M36 instrument wells and automated sample handlers.
- Cap versatility: Multiple cap configurations supported—including reflux caps with condensation channels, threaded caps with PTFE-sealed threads, integrated dual-cap designs, flared (bell-mouth) openings, and flat-top variants—each configurable with permanent laser-etched numbering on both cap and tube body.
- Cleaning resilience: Non-stick internal surface enables complete residue removal using dilute acid soak (e.g., 5% v/v HNO₃) followed by soft nylon brush cleaning; no scratching or surface degradation observed under routine handling.
Sample Compatibility & Compliance
These digestion vessels are validated for use with solid and semi-solid matrices including soil, sediment, plant tissue, biological tissues, and polymer composites. They meet essential requirements for EPA Method 3050B, ISO 11466, and GB/T 22105 (Chinese national standard for soil heavy metal analysis). While not rated for sealed high-pressure digestion (e.g., microwave-assisted), their open/reflux design aligns with GLP-compliant wet-chemistry workflows where trace-metal contamination control is critical. All units undergo batch-certified leach testing per USP elemental impurities limits, confirming sub-parts-per-trillion background contributions of Cr, Ni, Cu, Zn, As, Cd, Sb, Pb, and Hg.
Software & Data Management
As passive consumables, the vessels do not integrate directly with instrument software—but their standardized dimensions and laser-engraved identifiers support full traceability within LIMS environments. When used with M36-series digesters equipped with RFID or barcode readers, the engraved numbers enable unambiguous sample-to-vessel mapping, audit-ready chain-of-custody logging, and automated run sheet generation. Data integrity is further reinforced through compatibility with 21 CFR Part 11–compliant electronic lab notebooks (ELNs) when paired with digital workflow platforms.
Applications
- Acid digestion of environmental samples prior to ICP-OES or ICP-MS analysis
- Preparation of certified reference materials (CRMs) for calibration verification
- Leaching tests (e.g., TCLP, SPLP) requiring inert containment
- Method development and validation studies under ISO/IEC 17025 accreditation
- Quality control of raw materials in pharmaceutical excipient manufacturing
FAQ
What is the maximum safe operating temperature for these PTFE digestion tubes?
The vessels are rated for continuous use up to 250 °C under atmospheric (non-pressurized) conditions. For reflux applications above 200 °C, we recommend vented cap configurations to prevent pressure buildup.
Can these tubes be used in microwave digestion systems?
No—these are designed exclusively for open-vessel or reflux-style hot-block digestion. Microwave compatibility requires pressurized, reinforced PFA or quartz vessels with specific cavity geometry.
How should the tubes be cleaned between uses?
Rinse immediately after use with deionized water, then soak in 5% nitric acid for ≥30 minutes. Gently scrub interior with a PTFE-coated or nylon brush. Air-dry or dry at ≤100 °C on a clean hot plate or digestion block.
Are custom volumes or dimensional modifications available?
Yes—Binzhenghong offers OEM customization including volume adjustments (25 mL to 100 mL), alternate heights, specialized cap geometries, and multi-position numbering schemes for high-throughput labs.
Do you provide certificates of conformance or material test reports?
Each production lot includes a Certificate of Conformance detailing raw material grade (ASTM D4894 Grade A), dimensional inspection data, and leach test summary. Full MTRs are available upon request.
