BRAND ME 1C Chemical-Resistant Diaphragm Vacuum Pump with Adjustable Gas Ballast Valve

Overview

The BRAND ME 1C is a compact, two-stage, oil-free diaphragm vacuum pump engineered for reliable and chemically inert operation in demanding laboratory environments. Utilizing positive displacement via elastomeric diaphragms actuated by an eccentric cam mechanism, it generates vacuum through sequential compression and expansion cycles—eliminating reliance on lubricating oils and preventing contamination of sensitive samples or downstream instrumentation. Its core design principle centers on chemical resilience: all wetted components—including diaphragms, valves, tubing, and pump head surfaces—are fabricated from fluorinated polymers (PTFE, FKM, ETFE, ECTFE), ensuring long-term stability against aggressive solvents, acidic vapors, halogenated compounds, and alkaline condensates commonly encountered during rotary evaporation, vacuum filtration, or solvent removal protocols.

Key Features

• Chemically inert fluid path: PTFE “sandwich” diaphragms provide exceptional fatigue resistance and service life exceeding 10,000 operating hours under typical lab duty cycles.
• Integrated adjustable gas ballast valve: Enables controlled admission of ambient air into the second stage to reduce condensation of volatile vapors, preserving pumping speed and ultimate vacuum when handling solvent-laden streams.
• ATEX Category 3 certification: Certified for use in Zone 2/22 environments where explosive gas or dust mixtures are not expected to occur in normal operation but may arise infrequently or for short durations.
• Low-noise, low-vibration architecture: Optimized motor-balancing and elastomeric mounting minimize mechanical transmission, achieving 45 dBA at 1 m—suitable for shared benchtop spaces and noise-sensitive facilities.
• Modular, tool-free maintenance design: Diaphragm and valve replacement requires no special tools; service intervals exceed 12 months under standard usage, significantly reducing total cost of ownership.
• Compact footprint and lightweight construction: Dimensions of 243 × 243 × 198 mm and mass of 5.0 kg facilitate integration beneath fume hoods, inside glove boxes, or adjacent to rotary evaporators without spatial compromise.

Sample Compatibility & Compliance

The ME 1C is explicitly validated for continuous duty with corrosive, condensable, and reactive process gases—including HCl, HF, Cl₂, SO₂, acetone, methanol, ethyl acetate, and THF vapors—without degradation of sealing integrity or flow performance. It meets ISO 8573-1:2010 Class 0 requirements for oil-free compressed air/vacuum generation, eliminating risk of hydrocarbon contamination in analytical workflows. All electrical and mechanical assemblies comply with IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards. Documentation supports audit readiness for GLP and GMP environments, including traceable material certifications (e.g., FDA-compliant fluoropolymers per 21 CFR 177.1550) and full ATEX technical files available upon request.

Software & Data Management

As a standalone analog vacuum source, the ME 1C operates without embedded firmware or digital interfaces. However, it is fully compatible with third-party vacuum controllers (e.g., VACUUBRAND VRD series or KNF EC-100) via 0–10 V analog input for remote pressure setpoint modulation and real-time status feedback. When integrated into automated systems, its stable flow-pressure characteristics enable reproducible vacuum ramping profiles suitable for method validation under FDA 21 CFR Part 11–compliant platforms when paired with compliant data acquisition hardware and audit-trail-enabled software.

Applications

• Vacuum-assisted filtration of aggressive reagents in analytical sample preparation
• Rotary evaporation of acid-sensitive or halogenated solvents under controlled vacuum gradients
• Operation with vacuum ovens and lyophilizers requiring oil-free, non-reactive vacuum sources
• Supporting vacuum centrifugal concentrators handling volatile organic extracts
• Integration into custom reaction manifolds for Schlenk-line–style inert atmosphere control
• Backing high-vacuum systems (e.g., turbomolecular pumps) where hydrocarbon backstreaming must be avoided

FAQ

Is the ME 1C suitable for pumping hydrogen chloride (HCl) gas?
Yes—the entire gas path is constructed from fluoropolymers resistant to HCl vapor at concentrations up to saturation point at ambient temperature.
Can this pump be used continuously for 24/7 operation?
It is rated for continuous duty under ambient temperatures ≤35°C and relative humidity ≤80%; derating is recommended above these thresholds.
Does the pump require periodic oil changes?
No—it is a true oil-free diaphragm pump with no lubrication points in the vacuum chamber or drive mechanism.
What is the expected service life of the diaphragm under typical lab use?
Under standard intermittent operation (≤8 h/day, moderate solvent load), PTFE-sandwich diaphragms typically exceed 10,000 hours before replacement.
Is external cooling required?
No—passive convection cooling suffices; however, adequate ventilation around the unit is essential to maintain motor winding temperature within Class F insulation limits.