ROCKER WaterVac200-MB Direct-Drain Vacuum Filtration System

Overview

The ROCKER WaterVac200-MB is a compact, integrated direct-drain vacuum filtration system engineered for high-efficiency microbial water sample processing in compliance with ISO 8199:2018 — “Water quality — General guidelines for the enumeration of microorganisms by membrane filtration.” Unlike conventional vacuum setups requiring separate vacuum pumps, waste bottles, and interconnecting tubing, the WaterVac200-MB integrates a brushless DC vacuum pump, modular filtration base, and stainless-steel filter funnel into a single footprint unit. It operates on a closed-loop principle where filtrate is actively discharged via an internal peristaltic or diaphragm-assisted drainage mechanism—eliminating manual waste bottle handling, reducing cross-contamination risk, and enabling continuous, unattended operation during multi-sample workflows. Its design prioritizes reproducibility in low-volume (10–500 mL) aqueous filtration tasks common in environmental microbiology, potable water QA/QC, and regulatory testing laboratories.

Key Features

• Modular snap-lock base interface ensures rapid, leak-free coupling of SS316 filter funnels (100 mL, 300 mL, and 500 mL options) without tools or O-ring alignment.
• Integrated 60 W brushless DC motor delivers stable vacuum output at 313 mbar (525 mmHg), maintaining consistent flow rates across varying membrane resistances and sample viscosities.
• Direct-drain architecture eliminates external waste collection vessels—filtrate is routed through chemically resistant wetted-path components (SS316, FKM, silicone, PP, PPS) and expelled continuously via gravity-assisted or low-pressure discharge port.
• Ultra-compact form factor (21 × 18 × 26 cm) reduces benchtop occupancy by up to 70% versus traditional two-component systems; ideal for space-constrained biosafety cabinets and mobile field labs.
• Low-noise operation (≤60 dB(A)) supports use in shared laboratory environments without acoustic interference to adjacent instrumentation or personnel.
• Compliance-ready construction: CE-marked, RoHS-compliant, and rated IP41 for protection against solid ingress and vertically dripping water—suitable for controlled but non-hazardous lab environments.

Sample Compatibility & Compliance

The WaterVac200-MB is validated for filtration of low-turbidity aqueous matrices including drinking water, surface water, wastewater effluents, and sterile process rinse solutions. Its SS316 stainless-steel funnels withstand repeated flame sterilization (up to 500 °C) and autoclaving (121 °C, 20 min), supporting GLP-aligned aseptic technique. All fluid-contact materials meet USP Class VI biocompatibility standards and FDA 21 CFR 177.2440 (elastomers) and 177.1520 (polyolefins) requirements. Each unit undergoes factory calibration and vacuum integrity verification per ISO 8199 Annex B protocols to ensure ≥95% recovery efficiency for standard test organisms (e.g., E. coli ATCC 11229) on 0.45 µm mixed cellulose ester (MCE) membranes. Documentation includes traceable test reports for audit readiness under ISO/IEC 17025 and EPA Method 1603/1604.

Software & Data Management

The WaterVac200-MB is a hardware-only, analog-controlled system with no embedded firmware or digital interface—intentionally designed to minimize validation burden in regulated environments. Vacuum stability is maintained via passive pressure regulation; no software logs, user accounts, or electronic records are generated. This architecture aligns with FDA 21 CFR Part 11 “non-electronic record” exemptions and simplifies IQ/OQ/PQ documentation for GMP water testing labs. Optional accessories—including calibrated flow meters (NIST-traceable), vacuum gauges (analog Bourdon-type), and sterile filter housing kits—support full metrological traceability without introducing electronic dependencies.

Applications

• Membrane filtration for heterotrophic plate count (HPC), total coliform, and E. faecalis enumeration per ISO 9308-1, ISO 7899-2, and APHA Standard Methods 9222.
• Pretreatment of water samples prior to ATP bioluminescence assays, qPCR-based pathogen detection, or ion chromatography analysis.
• Suspended solids (TSS) quantification in environmental monitoring programs where gravimetric filtration must comply with ISO 11923.
• Routine QC filtering of culture media, buffer solutions, and reagent-grade water in pharmaceutical cleanrooms (ISO 5–8).
• Field-deployable filtration for emergency response teams conducting rapid potability screening in disaster zones.

FAQ

Does the WaterVac200-MB require a separate vacuum pump or waste container?
No. It incorporates a sealed, maintenance-free brushless DC vacuum pump and direct-drain fluid path—no external pump, trap bottle, or vacuum regulator is needed.
Can the stainless-steel funnels be sterilized in an autoclave?
Yes. All SS316 funnels (100 mL, 300 mL, 500 mL) are rated for repeated autoclaving at 121 °C for 20 minutes and direct flame sterilization.
Is the system compatible with non-aqueous solvents?
No. The wetted materials are selected for aqueous compatibility only. Organic solvents, strong acids/bases, or halogenated compounds may degrade FKM seals or silicone components.
What regulatory standards does it support out-of-the-box?
It meets ISO 8199:2018 vacuum performance criteria, carries CE marking per Directive 2014/35/EU (LVD), complies with RoHS 2011/65/EU, and satisfies IP41 enclosure rating per IEC 60529.
How is vacuum level monitored during operation?
Vacuum stability is verified at time of manufacture using calibrated analog gauges. No real-time digital readout is provided; users may add optional external analog vacuum meters for continuous monitoring.