VACUUBRAND MD 12C NT Three-Stage Chemical-Resistant Diaphragm Vacuum Pump
| Brand | VACUUBRAND® |
|---|---|
| Origin | Germany |
| Model | MD 12C NT |
| Pump Type | Oil-Free Diaphragm Pump |
| Stages | 3 |
| Pump Heads | 8 |
| Max. Flow Rate (50/60 Hz) | 11.1 / 12.3 m³/h |
| Max. Flow Rate (50/60 Hz) | 6.5 / 7.2 cfm |
| Ultimate Vacuum (absolute) | 2 / 1.5 mbar (torr) |
| Ultimate Vacuum with Gas Ballast | 4 / 3 mbar (torr) |
| Motor Power | 0.44 kW |
| Rated Speed (50/60 Hz) | 1500 / 1800 min⁻¹ |
| Inlet Port | KF DN 25 |
| Outlet Port | DN 15 mm hose nozzle |
| Ambient Operating Temp. | 10–40 °C |
| Storage Temp. | −10–60 °C |
| Max. Exhaust Pressure (abs.) | 1.1 bar |
| IP Rating | IP 40 |
| Dimensions (L×W×H) | 533 × 260 × 359 mm |
| Weight | 28.1 kg |
| Noise Level (50 Hz, typical) | 52 dBA |
| ATEX Certification (230 V only) | II 3G IIC T3 X, Internal Atmosphere Only |
Overview
The VACUUBRAND MD 12C NT is a three-stage, oil-free diaphragm vacuum pump engineered for continuous, chemically aggressive process environments. It operates on the principle of positive displacement via elastomeric diaphragms driven by an eccentric camshaft—eliminating lubricants and preventing cross-contamination. Its eight-pump-head architecture distributes mechanical load across three serial compression stages, enabling both high volumetric throughput and deep ultimate vacuum performance in a single unit. Designed specifically for handling corrosive gases (e.g., HCl, Cl₂, SO₂), solvent vapors, and condensable media, the MD 12C NT maintains stable operation where conventional rotary vane or scroll pumps would degrade or fail. All wetted surfaces—including diaphragms, valves, and chamber housings—are constructed from fluoropolymer materials (PTFE, FFKM, PCTFE), ensuring long-term compatibility with aggressive chemicals per ISO 15190 and ASTM D543 standards.
Key Features
- Triple-stage compression with eight synchronized diaphragm heads for optimized pressure gradient management and reduced thermal load
- PTFE-reinforced “sandwich” diaphragm design—validated for >15,000 operating hours under cyclic chemical exposure
- Integrated gas ballast valve enabling reliable condensate purging without sacrificing ultimate vacuum integrity
- Low-vibration, brushless induction motor with sealed bearings; zero maintenance over full service life
- Front-accessible, tool-free chamber disassembly for rapid inspection and cleaning—compliant with GLP laboratory hygiene protocols
- IP 40-rated enclosure suitable for controlled lab environments; optional ATEX-certified version (II 3G IIC T3 X) for use in Zone 2 hazardous areas
- Noise emission limited to 52 dBA at 1 m distance (50 Hz), meeting ISO 3744 acoustic requirements for shared laboratory spaces
Sample Compatibility & Compliance
The MD 12C NT is validated for vacuum generation in applications involving halogenated solvents (e.g., chloroform, dichloromethane), acidic and alkaline vapors, and reactive monomers. Its fluoropolymer-wetted path complies with USP extractables profiling for pharmaceutical process equipment. The pump meets CE marking requirements under the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. For regulated QC/QA workflows, it supports audit-ready documentation packages aligned with FDA 21 CFR Part 11 (when integrated with compliant SCADA systems) and ISO/IEC 17025 traceability frameworks.
Software & Data Management
While the MD 12C NT operates as a standalone analog device, its electrical interface (230 V~ 50–60 Hz) supports integration into centralized vacuum monitoring networks via optional analog 0–10 V or 4–20 mA output modules (sold separately). These enable real-time vacuum level logging, runtime metering, and predictive maintenance alerts when paired with LabVIEW, Ignition SCADA, or custom Python-based data acquisition platforms. All firmware updates and calibration records are maintained in VACUUBRAND’s certified service database—accessible to authorized service partners under NDA for GMP audit readiness.
Applications
- Routine and preparative rotary evaporation of acid-sensitive compounds in synthetic organic chemistry
- Vacuum drying of hygroscopic APIs under inert atmosphere (N₂ or Ar) in pharmaceutical development labs
- Gas-phase extraction and headspace analysis in environmental testing (EPA Method 502.2, ISO 11843)
- Thin-film deposition pre-vacuum conditioning in materials science cleanrooms
- Lyophilization cycle support for biologics formulation—particularly where silicone oil contamination must be excluded
- High-purity vacuum backing for turbomolecular pumps in surface analysis (XPS, AES) systems
FAQ
Is the MD 12C NT suitable for continuous duty operation?
Yes—it is rated for 100% duty cycle at ambient temperatures between 10 °C and 40 °C, provided adequate ventilation and inlet filtration are maintained.
Can it handle water vapor or ethanol condensate without performance loss?
Yes—the integrated gas ballast valve allows continuous venting of condensables while retaining ≤4 mbar ultimate vacuum; optional EK series condensers further reduce downstream vapor load.
What maintenance intervals are recommended?
No scheduled maintenance is required for the drive system; diaphragm replacement is typically needed every 12–18 months under standard chemical exposure—monitored via vacuum decay test per VACUUBRAND Service Bulletin SB-MD-NT-03.
Is remote status monitoring possible?
Yes—via optional analog signal outputs or digital RS-485 Modbus RTU interface (MD 12C NT-Modbus variant), enabling integration into LIMS or MES platforms.
Does it comply with noise regulations in academic laboratories?
Yes—its 52 dBA rating conforms to ISO 15710 and national occupational health guidelines for non-industrial lab settings (e.g., UK HSE L108, US OSHA Technical Manual Section III: Chapter 5).
