ROCKER Rocker300C–VFC47 Continuous Solvent Purification System

Overview

The ROCKER Rocker300C–VFC47 Continuous Solvent Purification System is an engineered vacuum filtration platform designed for high-integrity, operator-safe purification of HPLC mobile phase solvents and other low-viscosity organic or aqueous solutions. It operates on a non-oil, diaphragm-based vacuum generation principle—eliminating oil vapor contamination, lubricant degradation, and associated maintenance requirements typical of rotary vane pumps. The system integrates a corrosion-resistant Rocker300C PTFE-coated diaphragm pump with the VFC-47 continuous-flow glass funnel assembly, enabling uninterrupted, gravity-assisted filtration of large-volume samples without manual intervention. Unlike batch-style vacuum filtration setups, this configuration maintains constant vacuum pressure across the membrane surface during extended operation, ensuring consistent flow dynamics and minimizing membrane fouling. Its architecture supports ISO 8573-1 Class 0 air purity compliance in solvent-handling environments and aligns with laboratory practices requiring chemical compatibility, trace-level contamination control, and reproducible filtration performance under GLP-compliant workflows.

Key Features

• Oil-free diaphragm pump (Rocker300C) with PTFE-coated wetted parts, delivering stable vacuum down to 99 mbar abs. and rated for continuous duty at ≤65 W power consumption
• VFC-47 continuous-flow glass funnel with borosilicate construction, compatible with common HPLC-grade solvents including acetonitrile, methanol, tetrahydrofuran, and aqueous buffers
• Integrated submerged pickup tip ensures complete liquid drawdown from the funnel chamber, reducing residual volume to <0.5 mL and eliminating manual decanting
• Vacuum regulation valve enables precise control of suction force—critical for fragile membranes (e.g., 0.22 µm PVDF) or volatile solvent systems
• GL45-threaded 1000 mL receiving bottle provides standardized, leak-tight containment compatible with standard lab storage protocols and automated sample handling interfaces
• Certified to CE Directive 2014/30/EU (EMC), 2014/35/EU (LVD), IP30 ingress protection, and RoHS 2011/65/EU—validated for use in ISO 17025-accredited laboratories

Sample Compatibility & Compliance

The Rocker300C–VFC47 accommodates standard 47 mm or 50 mm diameter microporous membranes—including mixed cellulose ester (MCE), polyethersulfone (PES), polyvinylidene fluoride (PVDF), and nylon—enabling retention of particles ≥0.1 µm, microorganisms, and colloidal impurities. Its all-glass + PTFE + silicone fluid path meets USP and ASTM D4173 specifications for solvent contact materials. The system supports validation protocols aligned with FDA 21 CFR Part 11 (when paired with compliant data logging software), ISO 9001:2015 quality management requirements, and pharmacopeial methods such as USP (Microbiological Examination of Nonsterile Products) and USP (Particulate Matter in Injections). No lubricants, gaskets, or elastomers susceptible to solvent swelling are present in the primary flow path.

Software & Data Management

While the Rocker300C–VFC47 operates as a standalone analog instrument, its vacuum output and runtime can be monitored externally via optional digital pressure transducers (e.g., WIKA C-10 series) and time-stamped loggers compliant with 21 CFR Part 11 audit trail requirements. When integrated into automated lab environments, the system interfaces with LIMS platforms through 4–20 mA or 0–10 V analog outputs (available via third-party signal conditioning modules). All mechanical components are traceable via engraved serial numbers on both pump and funnel assemblies, supporting equipment qualification (IQ/OQ/PQ) documentation per GMP Annex 15 guidelines.

Applications

• HPLC and UHPLC mobile phase preparation—removing particulates, water, and trace metals from acetonitrile, methanol, and buffer stocks
• Pre-filtration of cell culture media and bioprocess buffers prior to sterile filtration
• Removal of catalyst residues and polymer aggregates from synthetic reaction mixtures
• Deaeration of solvents for electrochemical analysis and thin-film deposition processes
• High-recovery clarification of clarified lysates and fermentation broths in early-stage bioprocessing
• Environmental sample preparation for EPA Method 505 and 525.3 compliance

FAQ

What membrane types and pore sizes are compatible with the VFC-47 funnel?
Standard 47 mm or 50 mm diameter membranes with pore sizes ranging from 0.1 µm to 5.0 µm are supported—including hydrophilic and hydrophobic variants—as long as they meet ASTM F838-22 bacterial retention standards.
Can the Rocker300C pump handle chlorinated solvents such as chloroform or dichloromethane?
Yes, when equipped with optional PTFE–FKM dual-seal configuration (part no. R300C-SEAL-KIT-CL), the pump maintains integrity with halogenated solvents per ASTM D471 resistance testing.
Is the system suitable for use in explosion-proof environments?
No—the Rocker300C is not ATEX or IECEx certified; it must be operated outside Zone 0/1 hazardous areas unless installed within a ventilated fume hood meeting EN 14175-3 requirements.
How often does the diaphragm require replacement under continuous operation?
Based on accelerated life testing at 23 L/min load, mean time between failures exceeds 12,000 hours; routine inspection every 6 months is recommended for GxP-regulated labs.
Does ROCKER provide IQ/OQ documentation templates for this system?
Yes—validated protocol templates (including calibration checklists, leak test procedures, and performance verification tests) are available upon request for qualified customers under NDA.