VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Pump - NEW

VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Vacuum Pump – Brand New

The VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Vacuum Pump is a sophisticated oil-free laboratory vacuum pump designed for rotary evaporation, solvent evaporation, vacuum distillation, concentration, and other chemistry applications requiring precise, automatic vacuum control. Combining a chemically resistant two-stage diaphragm pump with the integrated VACUU·SELECT vacuum controller and VARIO variable-speed technology, the MZ 2C VARIO select automatically detects solvent boiling pressure and continuously adjusts pumping speed to maintain stable process conditions.

With an ultimate vacuum of 7 mbar (5 Torr) and maximum pumping speed of 1.65 cfm at 60 Hz, the MZ 2C VARIO select provides the vacuum range needed for evaporation of many common laboratory solvents while eliminating the oil maintenance associated with rotary vane pumps. This brand-new VACUUBRAND MZ 2C VARIO select is available from American Instrument Exchange and is an excellent vacuum solution for chemistry, pharmaceutical, biotechnology, analytical, and research laboratories seeking reproducible evaporation with less operator intervention.

VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Pump Key Features

• Brand-new VACUUBRAND MZ 2C VARIO select chemistry diaphragm vacuum pump

• Oil-free, chemically resistant diaphragm pump

• Integrated VACUU·SELECT vacuum controller

• VARIO variable-speed vacuum technology

• Automatic solvent boiling-point detection

• Automatic adjustment of vacuum during evaporation

• 7 mbar / 5 Torr ultimate vacuum

• 1.65 cfm maximum pumping speed at 60 Hz

• 2.8 m³/h maximum pumping speed at 50 Hz

• Two-stage, two-head diaphragm pump

• Excellent chemical resistance for common laboratory solvents

• Graphical controller interface with predefined laboratory applications

• Manual vacuum set-point control

• Fully automatic distillation programs

• User-programmable applications

• On-demand motor-speed control

• Extended diaphragm and valve service intervals

• Extremely quiet operation at approximately 43 dBA

• Ethernet and USB connectivity

• Compact benchtop design

• Available brand new from American Instrument Exchange

VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Pump Overview

The VACUUBRAND MZ 2C VARIO select goes beyond simply providing vacuum. It combines an oil-free chemistry diaphragm pump with intelligent vacuum control designed to actively manage laboratory evaporation processes.

During solvent evaporation, the integrated VACUU·SELECT controller can detect the boiling pressure of the solvent and automatically adjust the vacuum to maintain controlled evaporation. Rather than operating continuously at maximum pumping speed, VARIO technology changes motor speed according to actual process demand.

This approach provides several important advantages. Controlled evaporation helps reduce bumping and foaming, improves solvent recovery, reduces unnecessary vapor loading, and allows processes to proceed efficiently without requiring the operator to continually adjust a manual vacuum valve.

The VACUU·SELECT interface also provides predefined laboratory applications for common vacuum processes. Operators can use simple manual set-point control, run automated distillations, or create customized application sequences for specialized laboratory workflows.

For laboratories using rotary evaporators and other solvent-processing equipment every day, the result is a vacuum system designed not simply to reach a target pressure, but to actively optimize the process.

VACUUBRAND MZ 2C VARIO Select Key Specifications

Energy Efficiency & Operating Costs

VARIO technology provides an important operating advantage over fixed-speed vacuum pumps because the motor runs only as fast as necessary to maintain the required process pressure. Instead of continuously operating at maximum speed while a valve restricts vacuum, the MZ 2C VARIO select automatically adjusts motor speed according to process demand.

This reduces unnecessary energy consumption, noise, mechanical wear, and load on diaphragms and valves. VACUUBRAND specifically identifies the resulting extended service intervals for wear components as one of the advantages of its on-demand motor-speed control.

Because the MZ 2C VARIO select is also completely oil-free, laboratories eliminate vacuum pump oil changes, contaminated-oil disposal, oil mist, and oil backstreaming. For laboratories performing evaporation and distillation every day, reduced maintenance and longer wear-part life can significantly lower lifetime operating costs.

Specifications compiled from current VACUUBRAND manufacturer literature and American Instrument Exchange product information.

Common Applications

The VACUUBRAND MZ 2C VARIO select is particularly well suited for rotary evaporation, solvent evaporation, vacuum distillation, concentration, evaporation under reduced pressure, vacuum drying, degassing, and general chemistry applications involving common laboratory solvents.

Its automatic boiling-pressure detection makes it especially valuable for processes where solvent conditions change during operation or where operators want reproducible evaporation without continuously adjusting vacuum manually.

Ideal Laboratory Types

The MZ 2C VARIO select is an excellent choice for pharmaceutical research laboratories, biotechnology companies, organic chemistry laboratories, medicinal chemistry groups, university research facilities, analytical chemistry laboratories, contract research organizations, cannabis and natural-products laboratories where legally applicable, chemical synthesis laboratories, and industrial R&D facilities.

It is particularly useful in laboratories operating rotary evaporators and other solvent-processing equipment routinely, where automatic vacuum control can improve workflow efficiency and process reproducibility.

Automatic Vacuum Control with VACUU·SELECT

The integrated VACUU·SELECT controller is one of the most important differences between the MZ 2C VARIO select and a conventional diaphragm vacuum pump.

The graphical interface includes predefined applications for common laboratory vacuum processes. Users can select manual set-point control for straightforward applications, run automated distillations, or create customized process sequences.

During solvent evaporation, the controller can automatically detect boiling pressure and regulate the pump accordingly. This removes much of the trial-and-error associated with manually lowering pressure until a solvent begins to boil.

Instead, the vacuum system actively responds to changing process conditions.

VARIO Variable-Speed Vacuum Control

Traditional fixed-speed vacuum pumps generally operate at full speed while vacuum is regulated through a valve. VARIO technology takes a different approach.

The MZ 2C VARIO select directly changes pump motor speed to control system pressure. When more pumping capacity is required, motor speed increases. As the target vacuum is reached and vapor load decreases, the pump slows automatically.

This provides smooth vacuum regulation without continuously throttling the inlet.

Variable-speed operation can also help reduce bumping and foaming during evaporation because vacuum changes can occur more smoothly than with abrupt valve-based control.

MZ 2C VARIO Select for Rotary Evaporators

The MZ 2C VARIO select is particularly well suited as a vacuum pump for laboratory rotary evaporators.

Rotary evaporation depends heavily on accurate vacuum control. Applying too much vacuum too quickly can cause bumping, foaming, or product loss, while insufficient vacuum can make evaporation unnecessarily slow.

The VACUU·SELECT controller can identify the boiling pressure of the solvent and automatically adjust pump speed to maintain controlled evaporation. As process conditions change, the vacuum system responds accordingly.

This makes the MZ 2C VARIO select an excellent match for laboratories using rotary evaporators for solvent removal, sample concentration, purification, reaction workup, natural-product extraction, and pharmaceutical development.

Chemical Resistance & Oil-Free Operation

The MZ 2C VARIO select is designed specifically as a chemistry diaphragm pump for work involving common laboratory solvents.

Chemically resistant wetted components help protect the pumping mechanism from solvent vapors encountered during routine laboratory operation. Because the pump operates without oil, solvent vapors cannot contaminate a pump-oil reservoir as they can in conventional rotary vane systems.

Oil-free operation also eliminates oil backstreaming into laboratory apparatus and removes the need to purchase, monitor, replace, and dispose of vacuum pump oil.

Specific chemical compatibility should always be verified for the substances and concentrations involved in an application.

Vacuum Performance for Solvent Evaporation

The MZ 2C VARIO select provides an ultimate vacuum of 7 mbar (5 Torr) without gas ballast and approximately 12 mbar (9 Torr) with gas ballast.

This vacuum range supports evaporation of many common laboratory solvents at substantially reduced temperatures.

For heat-sensitive materials, reducing solvent boiling temperature can help minimize thermal degradation while accelerating evaporation. The combination of deep diaphragm-pump vacuum and automatic pressure regulation makes the MZ 2C VARIO select particularly useful for sensitive or valuable samples.

MZ 2C VARIO Select vs. ME 1C – Which VACUUBRAND Chemistry Pump Should You Choose?

The ME 1C and MZ 2C VARIO select are both oil-free chemistry diaphragm pumps, but they address substantially different laboratory requirements.

The ME 1C provides an ultimate vacuum of approximately 100 mbar and is particularly well suited for vacuum filtration, aspiration, and routine moderate-vacuum chemistry applications.

The MZ 2C VARIO select reaches 7 mbar, providing much deeper vacuum suitable for solvent evaporation and distillation. It also incorporates automatic VACUU·SELECT process control and VARIO variable-speed operation.

For routine filtration, the ME 1C is generally the simpler solution. For rotary evaporation, solvent evaporation, distillation, and processes requiring automatic vacuum regulation, the MZ 2C VARIO select provides substantially greater capability.

MZ 2C VARIO Select vs. RZ Rotary Vane Pumps

VACUUBRAND RZ-series rotary vane pumps reach substantially deeper ultimate vacuum than the MZ 2C VARIO select and are better suited for applications such as freeze drying, Schlenk lines, and fine-vacuum work.

The MZ 2C VARIO select offers different advantages: oil-free operation, excellent chemical resistance, intelligent process control, and automatic solvent boiling-pressure detection.

For solvent evaporation, the deepest possible vacuum is not necessarily the best solution. Precise control at the solvent's boiling pressure is often more important. This is where the MZ 2C VARIO select is particularly strong.

Recommended Laboratory Applications

The VACUUBRAND MZ 2C VARIO select is recommended for:

• Rotary evaporation

• Solvent evaporation

• Vacuum distillation

• Sample concentration

• Organic synthesis

• Pharmaceutical process development

• Reaction workup

• Vacuum drying

• Degassing

• Evaporation of heat-sensitive samples

• Chemical research

• Analytical sample preparation

• Automated vacuum processes

Application suitability should always be evaluated based on required pressure, pumping speed, solvent compatibility, vapor load, and process requirements.

Connectivity & Process Documentation

The MZ 2C VARIO select provides Ethernet and USB connectivity, with RS-232 communication available through an additional adapter.

These interfaces support data transfer, software updates, and integration into compatible laboratory workflows. For laboratories increasingly focused on process documentation and reproducibility, electronic vacuum control can provide an important advantage over purely manual vacuum systems.

Brand-New VACUUBRAND Vacuum Pumps from American Instrument Exchange

American Instrument Exchange offers the VACUUBRAND MZ 2C VARIO select brand new, giving laboratories access to current VACUUBRAND variable-speed chemistry vacuum technology from an established laboratory equipment supplier.

American Instrument Exchange also offers additional new VACUUBRAND vacuum pumps covering a broad range of laboratory requirements—from ME-series pumps for filtration and moderate vacuum, to VARIO chemistry pumps for controlled solvent evaporation, and RZ and RC-series pumps for fine and high-vacuum applications.

This range allows laboratories to select vacuum technology based on the actual process rather than simply choosing a pump based on maximum vacuum.

Shipping and Installation Considerations

The VACUUBRAND MZ 2C VARIO select is supplied completely assembled and ready for installation. Its compact approximately 9.6 × 9.6 × 9.6-inch footprint allows the pump to fit conveniently beside or beneath many laboratory rotary evaporators and other benchtop instruments.

The pump uses DN 8–10 mm hose nozzle connections at both the inlet and outlet. Vacuum tubing should be appropriately rated and chemically compatible with the solvents being processed.

Electrical configurations vary by catalog number, so users should verify the nameplate voltage and frequency of the specific unit being purchased before installation.

When hazardous, flammable, toxic, or corrosive vapors are processed, laboratories should provide appropriate exhaust routing, ventilation, condensate collection, and other engineering controls based on their specific process and safety requirements.

Related Laboratory Equipment

Laboratories purchasing variable-speed chemistry diaphragm pumps frequently also require rotary evaporators, vacuum ovens, recirculating chillers, cold traps, laboratory reactors, analytical balances, freeze dryers, solvent recovery equipment, and chemical fume hoods. American Instrument Exchange offers new and refurbished laboratory equipment for pharmaceutical research, organic chemistry, biotechnology, analytical laboratories, process development, and industrial R&D.

VACUUBRAND MZ 2C VARIO Select Frequently Asked Questions

What is the VACUUBRAND MZ 2C VARIO select primarily used for?

The MZ 2C VARIO select is particularly well suited for rotary evaporation, solvent evaporation, vacuum distillation, concentration, and other chemistry applications requiring controlled vacuum.

What is the ultimate vacuum of the MZ 2C VARIO select?

The pump reaches an ultimate vacuum of 7 mbar, or approximately 5 Torr, without gas ballast.

What is the pumping speed of the MZ 2C VARIO select?

Maximum pumping speed is approximately 1.65 cfm at 60 Hz or 2.8 m³/h at 50 Hz.

Is the MZ 2C VARIO select oil-free?

Yes. The MZ 2C VARIO select is an oil-free chemistry diaphragm vacuum pump, eliminating routine vacuum-pump oil changes and oil backstreaming.

Does the MZ 2C VARIO select include a vacuum controller?

Yes. The pump includes VACUUBRAND's VACUU·SELECT vacuum controller with a graphical user interface, predefined laboratory applications, manual set-point operation, automatic distillation capabilities, and customizable processes.

Can the MZ 2C VARIO select automatically control a rotary evaporator?

The pump is specifically designed for processes such as rotary evaporation. During solvent evaporation, the VACUU·SELECT controller can detect boiling pressure and automatically adjust pump operation to maintain appropriate vacuum conditions.

What does VARIO mean on a VACUUBRAND vacuum pump?

VARIO technology controls vacuum by changing the pump's motor speed according to process demand. This differs from fixed-speed systems that run continuously at full speed and regulate vacuum primarily through a valve.

Why is variable-speed vacuum useful for rotary evaporation?

Variable-speed control allows vacuum to respond smoothly to changing solvent conditions. This can improve process stability, reduce bumping and foaming, shorten process times, and reduce unnecessary wear on the pump.

What is the difference between the MZ 2C VARIO select and ME 1C?

The ME 1C is primarily a moderate-vacuum chemistry pump for applications such as filtration and aspiration and reaches approximately 100 mbar. The MZ 2C VARIO select reaches 7 mbar and adds automatic VACUU·SELECT vacuum control, making it much better suited for rotary evaporation and solvent distillation.

Is the MZ 2C VARIO select suitable for common laboratory solvents?

Yes. VACUUBRAND specifically positions the MZ 2C VARIO select for laboratories working with most common solvents, and the chemistry diaphragm design provides excellent chemical resistance. Compatibility should still be verified for the specific chemical and process.

How loud is the MZ 2C VARIO select?

VACUUBRAND specifies a sound pressure level of approximately 43 dBA, making this an exceptionally quiet vacuum solution for an occupied laboratory environment.

How large is the MZ 2C VARIO select?

The pump measures approximately 9.6" L × 9.6" W × 9.6" H and weighs approximately 31.5 lb, giving it a compact footprint for installation near a rotary evaporator or other laboratory process equipment.

Can custom vacuum processes be programmed?

Yes. In addition to predefined applications, VACUU·SELECT allows users to create customized vacuum processes for specialized laboratory workflows.

Is this VACUUBRAND MZ 2C VARIO select refurbished or used?

No. This VACUUBRAND MZ 2C VARIO Select Chemistry Diaphragm Vacuum Pump is brand new, not refurbished or previously used, and is available from American Instrument Exchange.