ROCKER WaterVac200-MS Direct-Drain Vacuum Filtration System

Overview

The ROCKER WaterVac200-MS is a compact, direct-drain vacuum filtration system engineered for high-efficiency liquid separation in life science laboratories. Unlike conventional vacuum filtration setups that rely on intermediate waste bottles and external vacuum sources, the WaterVac200-MS integrates a brushless DC vacuum pump and gravity-assisted drain pathway into a single, self-contained unit. It operates on the principle of negative pressure-driven membrane filtration—drawing sample fluid through microporous membranes (e.g., MF 3 or MF 5) while simultaneously discharging filtrate directly into a laboratory sink or drain line. This eliminates bottlenecks associated with waste bottle saturation, manual emptying, and tubing reconfiguration—reducing hands-on time by up to 40% per filtration cycle. Designed for routine applications including cell harvesting, microbial analysis, buffer clarification, and particulate removal from aqueous solutions, the system supports reproducible, operator-independent processing under ambient conditions.

Key Features

• Direct-drain architecture: Integrated siphon-style discharge eliminates need for waste collection bottles, reducing setup complexity and contamination risk.
• Space-optimized modular design: Footprint of only 21.4 × 18.3 cm reduces benchtop occupancy by ~70% compared to traditional two-component vacuum + bottle systems.
• Brushless DC motor: Delivers stable vacuum output (313 mbar / −525 mmHg) with low thermal drift, extended service life (>10,000 hr MTBF), and silent operation (<45 dB(A)).
• Chemically resistant wetted path: Fluid-contact components constructed from FKM (fluoroelastomer), medical-grade silicone, polypropylene (PP), and polyphenylsulfone (PPS)—compatible with alcohols, dilute acids/bases, and common biological buffers.
• Quick-change filtration platform: Interchangeable magnetic filter holders accept standard 300 mL and 500 mL MF-series funnels (e.g., part #200300-01 and #200500-01), enabling seamless adaptation across sample volume requirements.
• Compliance-ready construction: CE-marked and RoHS-compliant; IP41-rated enclosure protects internal electronics from vertically falling drips and solid objects ≥1 mm.

Sample Compatibility & Compliance

The WaterVac200-MS accommodates aqueous and mildly aggressive liquid samples typical in molecular biology, microbiology, and bioprocessing workflows—including PBS washes, cell culture supernatants, enzyme reaction mixtures, and clarified lysates. Its material compatibility profile supports use with 70% ethanol, 0.1 M NaOH, 0.1 M HCl, and phosphate-based buffers (pH 4–10). While not rated for organic solvent vapors or pressurized gas lines, the system meets essential electrical safety and environmental directives for lab equipment deployment in EU and North American institutions. Documentation packages include Declaration of Conformity (DoC) and material compliance statements traceable to ISO 10993-5 for cytotoxicity screening—supporting GLP-aligned recordkeeping.

Software & Data Management

The WaterVac200-MS operates as a standalone analog-controlled instrument without embedded firmware or digital interface. All operational parameters—including vacuum level, flow rate, and runtime—are mechanically stabilized via fixed-speed motor control and calibrated venturi geometry. As such, it does not generate electronic audit trails or require software validation. This analog architecture ensures deterministic performance unaffected by firmware updates or cybersecurity vulnerabilities—making it suitable for regulated environments where instrument qualification focuses on physical calibration (e.g., vacuum gauge verification per ASTM E2913) rather than software validation per FDA 21 CFR Part 11. Routine maintenance logs and calibration records may be maintained manually or integrated into existing LIMS platforms via external process documentation.

Applications

• Routine sterile filtration of media, reagents, and growth supplements using 0.22 µm or 0.45 µm membrane filters.
• High-throughput cell pellet recovery during transient transfection or CRISPR editing workflows.
• Microbial load testing in pharmaceutical water systems per USP guidance.
• Clarification of crude lysates prior to chromatographic purification or SDS-PAGE analysis.
• Environmental water sampling preparation for total suspended solids (TSS) quantification (EPA Method 160.2).
• Pre-filtration of feed streams for tangential flow ultrafiltration (TFF) systems to minimize membrane fouling.

FAQ

Does the WaterVac200-MS require a separate vacuum source or vacuum pump?
No—the system includes an integrated brushless DC vacuum pump; no external vacuum supply is needed.
Can it be used with organic solvents such as acetone or chloroform?
No—wetted materials are not chemically resistant to halogenated or ketonic solvents; use only with aqueous or alcohol-based solutions.
Is the unit compatible with vacuum ovens or glove boxes?
It is not designed for sealed or pressurized environments; operation requires atmospheric venting and open-drain connectivity.
What filtration membranes are recommended for use with the MF-series funnels?
Standard mixed cellulose ester (MCE), nylon, PVDF, and PTFE membranes in 47 mm diameter are fully compatible; pore sizes range from 0.1 µm to 5.0 µm.
How often should the pump be serviced?
Under normal laboratory use, the brushless motor requires no scheduled maintenance; periodic inspection of drain tubing integrity and seal condition is recommended every 6 months.