Laboratory vacuum pump MD 4C VARIO select

diaphragmmulti-stageoil-free

Overview

• Integrated VACUU·SELECT vacuum controller with graphical user interface and predefined applications to simplify laboratory workflows
• Automatic boiling point detection and continuous vacuum adjustment for faster solvent evaporation and shorter process times
• On-demand VARIO motor speed control for quiet operation and extended maintenance intervals
• Long diaphragm lifetime to reduce operating and service costs
• Designed for high‑vacuum requirements of most high‑boiling solvents

Key product highlights

• Ultimate vacuum: 1.5 mbar
• Ultimate vacuum with gas ballast: 3 mbar
• Max. pumping speed (50 Hz): 4.6 m³/h
• VACUU·SELECT controller: manual set‑point, fully automated distillations, drag‑and‑drop application creation
• VARIO® on‑demand motor speed control

Technical data and graphs (table)
Max. pumping speed 50 Hz: 4.6 m3/h
Max. pumping speed 60 Hz: 2.7 cfm
Ultimate vacuum: 1.5 mbar / 1.1 torr
Ultimate vacuum with gas ballast: 3 mbar / 2.2 torr
Number of heads: 4
Number of stages: 3
Vacuum controller: VACUU·SELECT
Lower ambient temperature (operation): 10 °C
Upper ambient temperature (operation): 40 °C
Lower ambient temperature (storage): -10 °C
Upper ambient temperature (storage): 60 °C
Max. back pressure (abs.): 1.1 bar
Inlet connection: Hose nozzle DN 8-10 mm
Outlet connection: Hose nozzle DN 8-10 mm
Rated motor power: 0.53 kW
Protection class IEC 60529: IP 20
Dimension L: 325 mm
Dimension B: 243 mm
Dimension H: 245 mm
Weight: 16.8 kg
Noise (sound pressure level) at 50 Hz: 43 dBA
ATEX conformity: II 3/- G Ex h IIC T3 Gc X (internal atmosphere only)
NRTL certification: No
Items supplied: Pump completely mounted, ready for use, with manual
Rated mains voltage range: 200-230 V
Mains frequency: 50-60 Hz
Interface: Ethernet (RJ45) Modbus TCP / USB (Type A) data transfer and software update; RS-232 via additional adapter

Technical specifications

• Model: MD 4C VARIO select
• Controller: VACUU·SELECT (graphical UI, predefined applications, manual and automated modes)
• Pumping principle: chemistry diaphragm pump, oil‑free, chemically resistant
• Pumping speed (50 Hz): 4.6 m³/h
• Ultimate vacuum (no gas ballast): 1.5 mbar
• Ultimate vacuum (with gas ballast): 3 mbar
• Number of heads: 4; Number of stages: 3
• Connections: Hose nozzle DN 8-10 mm (inlet and outlet)
• Rated motor power: 0.53 kW; mains 200-230 V, 50-60 Hz
• Protection class: IP 20
• Dimensions (L×B×H): 325 × 243 × 245 mm
• Weight: 16.8 kg
• Sound pressure level (50 Hz): 43 dBA
• Max. back pressure (abs.): 1.1 bar
• Interfaces: Ethernet (RJ45) Modbus TCP, USB Type A (data/software), RS-232 via adapter
• Items supplied: pump fully mounted and ready for use, with manual