VACUUBRAND ME 2 NT Single-Stage Diaphragm Vacuum Pump

Overview

The VACUUBRAND ME 2 NT is a robust, single-stage diaphragm vacuum pump engineered for continuous, oil-free evacuation of gases and vapors in laboratory and light industrial settings where ultimate vacuum levels down to 70 mbar (abs.) are sufficient. Operating on the principle of positive displacement via elastomeric diaphragm oscillation, the ME 2 NT delivers stable, pulsation-damped flow without lubricants—eliminating contamination risks in sensitive processes such as solvent removal, filtration, and vacuum drying. Its compact footprint (243 × 211 × 198 mm), low vibration design, and quiet operation (45 dBA at 50 Hz) make it ideal for benchtop integration in QC labs, academic research facilities, and GMP-compliant pilot-scale workflows. Unlike water aspirators, it consumes zero process water and generates no wastewater—supporting sustainability objectives and reducing operational overhead.

Key Features

• Oil-free diaphragm technology ensures contamination-free vacuum generation—critical for analytical sample preparation, lyophilization support, and chemical synthesis under inert atmosphere
• Single-stage architecture balances high volumetric throughput (2.0 m³/h at 50 Hz / 2.2 m³/h at 60 Hz) with reliable ultimate vacuum performance (70 mbar abs.)
• Low-noise, low-vibration motor–diaphragm coupling (rated 1500 min⁻¹ at 50 Hz / 1800 min⁻¹ at 60 Hz) enables stable operation adjacent to sensitive instrumentation (e.g., balances, microscopes, mass spectrometers)
• Sealed, maintenance-free drive system with extended diaphragm service life—no routine oil changes, valve replacements, or lubrication required during normal use
• NRTL certification for safety compliance in the United States and Canada; ATEX certification (II 3G IIC T3 X) for use in potentially explosive atmospheres (230 V models only)
• IP 40 ingress protection rating ensures resistance to dust ingress during standard lab handling and transport

Sample Compatibility & Compliance

The ME 2 NT is compatible with non-corrosive, non-condensable, and mildly condensable vapors typical in organic solvent evaporation (e.g., acetone, ethanol, ethyl acetate), vacuum oven drying (up to 40 °C ambient), and multi-position filtration manifolds. It is not intended for aggressive halogenated solvents (e.g., chloroform, DCM), strong acids, or particulate-laden streams without upstream trapping. The pump meets essential regulatory expectations for laboratory equipment: its construction adheres to DIN EN 61000-6-3 (EMC emissions) and DIN EN 61000-6-2 (immunity); documentation supports GLP audit readiness through traceable serial-numbered units and factory calibration records. While not inherently 21 CFR Part 11 compliant (as it lacks digital data logging), its analog interface allows integration into validated vacuum control systems when paired with external pressure transducers and compliant SCADA software.

Software & Data Management

The ME 2 NT operates as a standalone analog device with no embedded firmware or digital interface. For automated vacuum control, it integrates seamlessly with VACUUBRAND’s optional accessories—including the VACUU·LAN® Mini Network (Order No. 2614455) for distributed vacuum management across multiple workstations, and the vacuum-regulating valve with integrated digital gauge (Order No. 696840), which provides real-time pressure feedback and adjustable setpoint control via analog 0–10 V output. When deployed in regulated environments, users may connect third-party validated pressure loggers (e.g., calibrated capacitance manometers) to meet ALCOA+ data integrity requirements for critical drying or filtration steps.

Applications

• Continuous vacuum supply for benchtop and medium-capacity vacuum ovens (up to 60 L volume)
• Simultaneous operation of single- or multi-port filtration manifolds (e.g., Büchner funnel arrays, HPLC solvent degassing)
• Support vacuum for rotary evaporators handling low-boiling solvents (where <100 mbar operation suffices)
• Inert gas purging and blanketing during air-sensitive reactions
• Pre-concentration of aqueous extracts prior to LC-MS analysis
• Evacuation of desiccators and glove boxes requiring coarse-to-medium vacuum levels

FAQ

Is the ME 2 NT suitable for pumping corrosive vapors such as HCl or NO₂?
No. The pump’s EPDM diaphragm and internal wetted materials are not chemically resistant to strong acids, oxidizers, or halogenated solvents. Use only with non-aggressive, non-particulate gases and vapors.
Can it be operated continuously for 24/7 duty cycles?
Yes—designed for uninterrupted operation within the specified ambient temperature range (10–40 °C) and with adequate ventilation. Thermal cut-off protection prevents overheating under sustained load.
What is the expected service life of the diaphragm under typical lab usage?
Under standard operating conditions (≤8 h/day, ambient ≤30 °C, clean gas stream), the diaphragm typically exceeds 10,000 hours of runtime before replacement is recommended.
Does the pump include an exhaust filter or silencer by default?
Yes—the unit ships with an integrated muffler on the outlet port (G1/4″ thread) to suppress noise and damp pulsations; no additional silencing hardware is required for basic installation.
Is electrical certification valid for both 50 Hz and 60 Hz operation?
Yes—the motor is dual-frequency rated (50–60 Hz); however, ATEX certification applies exclusively to the 230 V / 50 Hz configuration per directive II 3G IIC T3 X.