Polymer Char SFD Automated Solvent Transfer and Filtration System

Overview

The Polymer Char SFD Automated Solvent Transfer and Filtration System is an engineered solution designed for laboratories performing polymer characterization—particularly polyolefin analysis via techniques such as Temperature Rising Elution Fractionation (TREF) and Crystallization Analysis Fractionation (CRYSTAF). It addresses critical occupational safety and operational efficiency challenges associated with manual solvent handling. The system operates on a closed-loop, pressure-driven fluid transfer principle, utilizing inert gas (typically nitrogen or argon) to pneumatically convey solvents between storage reservoirs, analytical instruments, and waste collection vessels. All solvent pathways are constructed from chemically resistant materials—including PTFE-lined tubing, stainless-steel fittings, and solvent-compatible diaphragm valves—to ensure compatibility with chlorinated solvents (e.g., trichlorobenzene), aliphatic hydrocarbons, and aromatic solvents commonly used in polymer dissolution and fractionation workflows. By eliminating open pouring, funnel use, and manual bottle handling, the SFD system significantly reduces operator exposure to volatile organic compounds (VOCs), mechanical hazards from glass breakage, and ergonomic strain.

Key Features

• Fully automated, programmable solvent delivery and waste recovery—no manual pouring, funneling, or bottle lifting required
• Integrated particulate filtration (0.45 µm or 0.22 µm optional) for both fresh solvent supply and return lines, preventing column fouling and instrument contamination
• Modular, tool-free disassembly of solvent manifolds and filter housings for rapid maintenance and cleaning under controlled conditions
• Pressure-regulated gas-assisted transfer ensures consistent flow rates and minimizes cavitation or vapor lock in high-boiling-point solvents
• Leak-tight sealed architecture compliant with ISO 10637 (laboratory equipment — safety requirements for systems handling hazardous liquids)
• Real-time status indicators for solvent level, filter saturation, and system pressure—integrated into optional Ethernet/RS-485 communication interface

Sample Compatibility & Compliance

The SFD system is validated for use with standard polymer analysis solvents including 1,2,4-trichlorobenzene (TCB), o-dichlorobenzene (ODCB), xylene, and heptane. It supports both ambient and elevated temperature solvent transfer (up to 160 °C when paired with heated lines and insulated enclosures). All wetted components meet USP Class VI biocompatibility standards and are certified for repeated exposure to aggressive organochlorides. The system design conforms to European Directive 2008/68/EC (transport of dangerous goods) for internal lab transfer, and aligns with OSHA 29 CFR 1910.1200 (Hazard Communication Standard) and EU REACH Annex XIV requirements for substitution of hazardous substances. Documentation packages include Factory Acceptance Test (FAT) reports and material traceability certificates for GxP-regulated environments.

Software & Data Management

The SFD operates via a dedicated embedded controller with a 5.7″ color touchscreen HMI, supporting configurable transfer protocols (e.g., “Fill Instrument A → Run Cycle → Drain to Waste → Rinse Loop”). Optional integration with Polymer Char’s IRIS software enables audit-trail-enabled operation logging—including timestamps, solvent volume transferred, filter usage cycles, and alarm events—in accordance with FDA 21 CFR Part 11 requirements. Electronic records retain full traceability for GLP and GMP audits, with user role-based access control (operator, supervisor, administrator) and encrypted data export (CSV/SQL) for LIMS synchronization.

Applications

• Automated solvent replenishment and waste removal for TREF and CRYSTAF instruments (e.g., Polymer Char TREF-200, CRYSTAF-200)
• Safe handling of high-boiling, thermally sensitive solvents during high-temperature GPC/SEC sample preparation
• Integration into automated polymer fractionation platforms requiring multi-instrument solvent sharing (e.g., parallel TREF + FTIR or DSC modules)
• Reduction of solvent-related incident rates in ISO/IEC 17025-accredited testing laboratories
• Support for sustainability initiatives through precise volume metering and reduced solvent overuse or spillage

FAQ

Does the SFD system require external nitrogen supply?
Yes—operation requires a clean, oil-free, regulated nitrogen or argon source (typical pressure range: 3–6 bar). Optional integrated gas regulator and particulate/moisture filters are available.
Can the SFD be retrofitted to existing Polymer Char instruments?
Yes—the system is compatible with all current-generation TREF and CRYSTAF platforms via standardized solvent port interfaces and protocol-mapped digital I/O.
What maintenance intervals are recommended for filters and tubing?
Filter cartridges should be replaced after every 50 L of solvent processed or upon pressure differential >1.5 bar; PTFE tubing is rated for ≥2 years continuous service under typical lab conditions.
Is remote monitoring supported?
Standard Ethernet connectivity enables SNMP-based network monitoring and optional integration with laboratory building management systems (BMS) or centralized instrument dashboards.
How is compliance with HSE policies documented?
Each unit ships with a Hazard and Operability Study (HAZOP) summary, risk assessment matrix aligned to ISO 12100, and a completed COSHH (UK) or GESTIS (EU) chemical handling evaluation report.