WIGGENS VF12 Glass Vacuum Filtration Kit

Overview

The WIGGENS VF12 Glass Vacuum Filtration Kit is a precision-engineered laboratory vacuum filtration system designed for reliable, contamination-free processing of organic solvents, corrosive liquids, and sensitive biological samples. Built around borosilicate glass components—including a 250 mL funnel body, 1000 mL reagent bottle (SOCOREX S314.1000), and a 47 mm ground-glass fritted base—the VF12 operates on standard vacuum-assisted dead-end filtration principles. Its architecture complies with fundamental requirements for inertness, thermal stability (up to 500 °C short-term), and chemical resistance to strong acids, bases, and halogenated solvents. The kit integrates a dedicated reagent bottle adapter (Part No. 197000-65) and silicone stopper to ensure leak-tight sealing under sustained vacuum (typically ≤100 mbar), enabling consistent flow rates and reproducible filtrate recovery—critical for HPLC solvent preparation, pharmaceutical residual analysis, and environmental suspended solids (TSS) quantification per ISO 5667-12 and ASTM D5907.

Key Features

• Borosilicate glass construction (DIN ISO 3585) for high hydrolytic resistance, low extractables, and autoclavability (121 °C, 20 min)
• 47 mm fritted glass base with uniform pore structure (nominal porosity: G3 or G4, ~15–40 µm) for consistent particle retention and minimal adsorption
• Dedicated SOCOREX S314.1000 1000 mL reagent bottle—certified Class A volumetric accuracy, calibrated to ±0.5% at 20 °C
• Integrated aluminum-magnesium alloy clamp (Part No. 167210-032) providing stable, tool-free assembly and vibration-dampened operation
• Silicone stopper (FDA-compliant, USP Class VI) with integrated vacuum port and hose barb (ID 8 mm) for seamless connection to vacuum pumps or central lab systems
• Modular design supporting interchangeable filter membranes (cellulose acetate, PVDF, PTFE, nylon) via standardized 47 mm support geometry

Sample Compatibility & Compliance

The VF12 is validated for use with aqueous buffers, ethanol/water mixtures, acetonitrile, chloroform, and dilute mineral acids (e.g., 1 M HCl, 0.5 M HNO₃). It excludes hydrofluoric acid and molten alkalis. All wetted parts meet EU Regulation EC No. 1935/2004 for food contact materials and USP for pharmaceutical packaging components. The glassware conforms to DIN EN ISO 1042 (volumetric flasks) and DIN 12574 (filter funnels). When used in GLP/GMP environments, the system supports audit-ready documentation: each component carries traceable batch numbers; reagent bottles include calibration certificates; and filtration protocols may be recorded with time-stamped vacuum pressure logs (when paired with compatible digital vacuum controllers).

Software & Data Management

While the VF12 is a manually operated passive filtration system, its interoperability with digital lab infrastructure is ensured through standardized mechanical interfaces. When integrated into automated workflows—such as those using Hamilton STAR or Tecan Fluent liquid handlers—the vacuum line may be controlled via 0–10 V analog input or dry-contact relay signals (with optional vacuum regulator modules). Raw filtration data (duration, volume processed, observed clogging onset) can be logged in ELN platforms (e.g., LabArchives, Benchling) using structured templates aligned with ALCOA+ principles. For regulatory submissions, the kit’s material certifications (e.g., CoA for borosilicate 3.3 glass, RoHS/REACH declarations) are available upon request and support FDA 21 CFR Part 11-compliant record retention when archived electronically.

Applications

• Preparative solvent purification for HPLC, GC, and AA analysis—removing particulates and trace metals from mobile phases
• Microbiological testing per ISO 7218 and APHA Standard Methods 9222B: membrane filtration of water, beverages, and pharmaceutical rinsates
• Turbidity-sensitive assays requiring low-background filtration (e.g., UV-Vis spectroscopy sample prep)
• Recovery of heat-labile biomolecules (e.g., plasmid DNA, monoclonal antibodies) where polymeric filters induce binding or degradation
• Environmental monitoring: suspended solids (TSS) determination in wastewater per ISO 11923 and EPA Method 160.2
• Crystallization workups and recrystallization solvent recovery in synthetic organic chemistry

FAQ

Is the VF12 suitable for sterile filtration?
No—the VF12 itself is not a sterile device. However, all components are autoclavable (121 °C, 20 min, free steam), and the system may be assembled aseptically post-sterilization for use with 0.22 µm sterilizing-grade membranes.
Can I use PTFE membranes with this kit?
Yes. The 47 mm fritted glass base provides full support for standard 47 mm PTFE, PVDF, and nylon membranes. Use appropriate membrane-specific pre-wetting protocols to avoid air locking.
What vacuum level is recommended for optimal performance?
Operate between 20–80 mbar (15–60 torr). Excessive vacuum (<10 mbar) may cause membrane rupture or foaming in low-surface-tension solvents.
How do I clean and maintain the glass components?
Rinse immediately after use with compatible solvents; soak in warm 2% Alconox® detergent; sonicate for 10 min; rinse thoroughly with Type I water; dry in laminar flow hood or 110 °C oven. Inspect frits regularly for clogging or etching.
Is the SOCOREX reagent bottle included calibrated?
Yes—the S314.1000 bottle is supplied with an individual calibration certificate traceable to PTB (Physikalisch-Technische Bundesanstalt), meeting DIN EN ISO/IEC 17025 requirements.