VARIO® chemistry diaphragm pump MD 12C NT VARIO select Product description The MD 12C NT VARIO select pump is an excellent solution for those who need high pumping speed and are working with high boiling point solvents. Combined with the reliability born of its chemical resistant fluoropolymer and perfluoroelastomer wetted materials, this pump delivers reliable performance for floor-standing rotary evaporators, vacuum drying ovens, vacuum distillation columns, and other similar applications. The integrated VACUU·SELECT controller provides an easy-to-use, application based interface that covers all common lab applications. The VACUU·SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU·SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process to maintain process control. With VARIO control, the pump runs only as fast is necessary. This extends the maintenance intervals and makes the pumping unit whisper quiet. Performance features VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies work in the laboratory automatic boiling point detection and adjustment of the vacuum for short process times meets high vacuum requirements for large quantities of most high boiling solvents extraordinary diaphragm life for minimum operational and servicing costs Technical data are subject to change without notice © VACUUBRAND GMBH + CO KG | 2026

Items suppliedPump completely mounted, ready for use, with manual.Accessories ■ Function extension for VACUU-SELECT controller VACUU-SELECT User Management (20700900) ■ Silencer with hose 5cm DN 8-10mm (20636588) ■ Clamping ring for small flange KF DN 20/25 (20660001) ■ External centring ring for small flange KF DN 20/25 (20660196) ■ Vacuum tubing PVC with internal stainless steel spiral, with small flanges KF DN 25 (20686021) ■ Small flange with hose nozzle KF DN 25 / DN 10 mm (20662807) ■ Rubber vacuum tubing DN 10 mm (20686002) Technical data are subject to change without notice © VACUUBRAND...

Ultimate vacuum Ultimate vacumm with gas ballast Number of heads Number of stages Vacuum controller Permissible ambient temperature range (operation) Permissible ambient temperature range (storage) Max. outlet pressure (abs.) Inlet connection Outlet connection Rated motor power Motor speed range Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% 47 dBA ATEX conformity II 3/- G Ex h IIC T3 Gc X Internal Atm. only Interface Ethernet (RJ45): Modbus TCP / USB (Type A): Data transfer, software update, RS-232 (additional adapter required) Technical data are subject to change without notice...

Pumping speed graph at 50 Hz Pump down graph at 50 Hz (100 l volume) Technical data are subject to change without notice © VACUUBRAND GMBH + CO KG | 2026

Dimension sheet Technical data are subject to change without notice © VACUUBRAND GMBH + CO KG | 2026

VACUUBRAND GMBH + CO KG P.O. Box 1664 97877 Wertheim T +49 9342 808 5550 F +49 9342 808 5555 [email protected] www.vacuubrand.com VACUUBRAND is part of the Brand group, a manufacturer of high-quality and innovative laboratory equipment and vacuum technology with a global team of approx. 1,000 employees. With highly motivated and qualified employees, we manufacture the world's most comprehensive product family for vacuum generation, measurement and control for the rough and fine vacuum range in the laboratory. All with one goal: Enabling our customers to run reliable, safe and efficient processes....