Rocker Lafil400-SF10 Vacuum Filtration System

Overview

The Rocker Lafil400-SF10 Vacuum Filtration System is an integrated, benchtop vacuum filtration platform engineered for precision, safety, and reproducibility in life science laboratories. Designed around a self-contained architecture, it combines a high-efficiency diaphragm vacuum pump with a modular stainless-steel filtration assembly—eliminating the need for external vacuum sources or complex hose routing. Its operational principle relies on controlled negative pressure generation to drive liquid samples through microporous membranes under standardized conditions, enabling quantitative recovery of suspended solids, microorganisms, or particulates from aqueous or low-viscosity biological matrices. The system complies with core methodological requirements outlined in ISO 7704 (water quality — determination of suspended solids), ASTM D5907 (standard test method for filterable and nonfilterable matter in water), and USP & EP guidelines for membrane filtration in sterility testing and microbial enumeration. With its compact footprint (34 × 24 × 30 cm), it optimizes limited bench space while maintaining full functional integrity—ideal for QC labs, environmental monitoring units, and academic research facilities performing routine or high-throughput filtration workflows.

Key Features

• Integrated vacuum source and filtration manifold—no external pump or vacuum line required
• SS316 stainless steel filtration funnel with precision-machined support plate and 47 mm membrane seating; corrosion-resistant and autoclavable
• Polycarbonate (PC) waste bottle (1200 mL capacity) featuring a fail-safe polypropylene (PP) float valve that mechanically blocks gas inlet upon liquid contact—preventing pump contamination and ensuring operational continuity
• Quick-connect twist-lock interface between funnel and bottle: tool-free, leak-tight, and repeatable sealing verified across >10,000 cycles in durability testing
• Full autoclave compatibility: both funnel and bottle withstand standard sterilization cycles (121 °C, 20 min, 100 kPa saturated steam) without dimensional drift or material degradation
• Low-noise operation (<52 dB(A)) and thermal management optimized for continuous use up to 8 hours per shift
• CE-marked host unit compliant with EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity) standards

Sample Compatibility & Compliance

The Lafil400-SF10 accommodates all standard 47 mm diameter membrane filters—including mixed cellulose ester (MCE), polyethersulfone (PES), nylon, PVDF, and track-etched polycarbonate—with nominal pore sizes ranging from 0.1 µm to 5.0 µm. It supports filtration of water, buffer solutions, cell culture supernatants, food extracts, and pharmaceutical rinse fluids. The system meets GLP-aligned documentation requirements: each unit ships with a Factory Calibration Certificate traceable to NIST standards, including measured ultimate vacuum (25 mbar ± 0.5 mbar) and flow rate (20 L/min ± 0.8 L/min at 100 mbar). All wetted components comply with USP Class VI biocompatibility testing and FDA 21 CFR 177.1520 (polycarbonate) and 177.1310 (stainless steel) regulations. For regulated environments, optional audit-trail-ready software integration is available via RS-232 output for connection to LIMS or electronic lab notebooks.

Software & Data Management

While the Lafil400-SF10 operates as a standalone analog instrument, its RS-232 serial port enables direct communication with third-party data acquisition platforms. When paired with Rocker’s optional LabLink Pro software (v3.2+), users can log real-time vacuum level, cumulative runtime, and cycle count—supporting 21 CFR Part 11-compliant electronic records when deployed with validated user authentication and audit trail modules. Raw sensor outputs are timestamped and exportable in CSV or XML formats for integration into statistical process control (SPC) dashboards or automated QA reporting pipelines. No proprietary drivers or cloud dependencies are required; communication follows standard Modbus RTU protocol for seamless interoperability with industrial PLCs or SCADA systems.

Applications

• Microbial analysis: membrane filtration for coliform, E. coli, and total viable count (TVC) assays per ISO 9308-1 and EPA Method 1603
• Suspended solids quantification in wastewater, drinking water, and surface water per ISO 11923 and APHA Standard Methods 2540D
• Cell harvesting and clarification in upstream bioprocessing (e.g., CHO or HEK293 supernatant pre-filtration)
• Preparative filtration prior to HPLC, LC-MS, or ICP-MS sample introduction
• Sterility testing of injectables, ophthalmic solutions, and medical device rinsates per USP and Ph. Eur. 2.6.1
• Environmental monitoring of air sampling filter extracts and soil leachate suspensions

FAQ

Is the Lafil400-SF10 suitable for filtering viscous or protein-rich samples?
Yes—when used with low-protein-binding membranes (e.g., PES or PVDF) and appropriate pre-filtration steps, it maintains consistent flow rates for samples with dynamic viscosities up to 5 cP. For higher-viscosity applications, we recommend pairing with Rocker’s LF-32 pressure-assisted adapter kit.
Can the stainless steel funnel be cleaned using sodium hydroxide or chlorine-based sanitizers?
Yes—SS316 construction resists caustic cleaning agents up to 1 M NaOH and 500 ppm sodium hypochlorite at ambient temperature. Extended exposure above 60 °C requires validation per your facility’s cleaning SOP.
Does the system include a built-in vacuum gauge?
No—the Lafil400-SF10 is designed for fixed-pressure applications where endpoint detection is membrane-limited rather than vacuum-dependent. Optional analog or digital vacuum gauges (e.g., Rocker VG-100 series) can be installed inline via the 8 mm barbed port.
What maintenance intervals are recommended for the diaphragm pump?
Under typical lab usage (≤4 hr/day), replace the pump diaphragm and valves every 12 months; inspect inlet filter monthly. Rocker provides OEM replacement kits (Part No. PK-DIA-400) with calibration verification documentation.
Is the PC waste bottle resistant to acetone or ethanol?
Polycarbonate exhibits limited resistance to acetone (stress cracking may occur); however, it is fully compatible with 70–100% ethanol, isopropanol, and aqueous disinfectants. For organic solvent applications, Rocker offers optional borosilicate glass bottle kits (LF-G1200).