VACUUBRAND ME 8C NT Chemical-Resistant Diaphragm Vacuum Pump

Overview

The VACUUBRAND ME 8C NT is a single-stage, oil-free diaphragm vacuum pump engineered for continuous, chemically aggressive laboratory and pilot-scale applications. It operates on the principle of positive displacement via elastomeric diaphragm oscillation, eliminating the need for lubricating oils and thereby preventing contamination of sensitive processes or vapors. Its core design targets reliable evacuation of corrosive gases—including chlorine, hydrogen sulfide, ammonia, organic solvents, and acidic vapors—while maintaining stable performance under condensable vapor loads. The pump achieves an ultimate absolute pressure of 70 mbar (52 torr), with a maximum volumetric flow rate of 7.8 m³/h at 60 Hz, making it suitable for rotary evaporation, vacuum filtration, freeze drying support, degassing, and vacuum distillation where chemical compatibility and long-term operational stability are critical.

Key Features

• Chemically inert wetted parts constructed entirely from fluoropolymers—primarily PTFE, FFKM, and ETFE—ensuring resistance to strong acids, bases, halogens, and polar/non-polar solvents.
• Proprietary PTFE “sandwich” diaphragm design: a reinforced tri-layer structure that enhances mechanical stability, reduces fatigue-induced cracking, and extends service life beyond 10,000 operating hours under typical lab conditions.
• Low-vibration, brushless induction motor with integrated thermal protection; maintenance-free drive system requiring no oil changes, belt replacements, or valve servicing.
• Compact footprint (325 × 243 × 198 mm) and ultra-quiet operation (45 dBA at 50 Hz), enabling benchtop integration in shared laboratories, fume hoods, or ISO-classified environments without acoustic or mechanical interference.
• Robust housing with IP 40 ingress protection; designed for ambient operation between +5 °C and +40 °C and relative humidity up to 80 % non-condensing.

Sample Compatibility & Compliance

The ME 8C NT is validated for use with vapors and gases commonly encountered in synthetic chemistry, analytical sample preparation, and pharmaceutical R&D workflows. It complies with NRTL requirements for electrical safety in the United States and Canada (UL/CSA 61010-1). For hazardous area installations, the 230 V variant carries ATEX certification (II 3G IIC T3 X) for use in Zone 2 gas atmospheres—limited to internal atmosphere applications only. While not intrinsically safe for Zone 0/1, its sealed motor and non-sparking construction meet essential risk mitigation criteria for low-energy vapor handling. The pump supports GLP-compliant documentation through traceable serial-numbered units and factory calibration records, and its oil-free architecture aligns with USP guidelines for analytical instrument qualification where hydrocarbon contamination must be excluded.

Software & Data Management

The ME 8C NT is a stand-alone, analog-operated device with no embedded microcontroller or digital interface. It does not feature onboard data logging, remote control, or software integration. However, its consistent performance characteristics—stable flow rate across variable backpressure, predictable vacuum decay profiles, and repeatable startup behavior—make it highly compatible with third-party process monitoring systems. Users routinely integrate it with external pressure transducers (e.g., capacitance manometers), programmable logic controllers (PLCs), or LabVIEW-based acquisition platforms for automated vacuum sequencing, endpoint detection in solvent removal, or audit-trail generation per FDA 21 CFR Part 11 when paired with compliant data-handling infrastructure.

Applications

• Rotary evaporation of acid-sensitive compounds and halogenated solvents
• Vacuum-assisted filtration of aggressive reagent mixtures (e.g., HF-containing etchants, nitric-perchloric digestions)
• Support vacuum for cold traps in Schlenk line manifolds handling air-sensitive organometallics
• Degassing of resin formulations prior to casting or coating processes
• Primary vacuum stage for hybrid systems combining with secondary high-vacuum pumps (e.g., turbomolecular or diffusion pumps)
• Environmental testing chambers requiring chemically inert vacuum generation

FAQ

Is the ME 8C NT suitable for pumping water vapor continuously?
Yes—the NT series features enhanced condensate tolerance due to optimized diaphragm cooling geometry and vapor-resistant valve materials. Continuous duty with saturated water vapor is supported, though prolonged exposure to large liquid volumes may require optional condensate trap installation.
Can this pump be used in a Class 100 cleanroom environment?
While the pump itself emits no particulates or oil mist, its IP 40 rating does not guarantee cleanroom compatibility. It must be installed outside the cleanroom envelope with tubing routed through pass-through ports; vibration isolation and acoustic shielding are recommended.
Does the pump include a built-in vacuum gauge or pressure controller?
No—vacuum measurement and regulation require external instrumentation. VACUUBRAND offers compatible analog vacuum gauges (e.g., VACUU·SELECT series) and PID-controlled throttle valves for closed-loop pressure management.
What is the expected service interval for the diaphragm under standard lab usage?
Under typical intermittent operation (<8 hrs/day) with non-abrasive, non-particulate media, the PTFE sandwich diaphragm typically exceeds 12–18 months of service life before replacement is advised, as confirmed by routine visual inspection and flow verification tests.
Is the 230 V version certified for use in explosion-hazardous areas outside the EU?
The ATEX marking applies only to equipment placed on the EU market. For equivalent North American hazardous location compliance, users must verify local authority acceptance of the NRTL listing and consult jurisdiction-specific codes (e.g., NEC Article 500/505) prior to installation.