Another innovation from Across International and DigiVac:

Control Your Evaporation Process Like a Symphony! Control up to 4 Rotary Evaporators or Chambers with a Single
Vacuum Pump. Fine Tune Your Evaporation Process with Concerto your ideal Ramp Vacuum Controller!

  • Simplify Your Lab & Control More With Less
  • Maximize Throughput With a 17.5 mm vacuum path to each hose barb
  • Precision Control & Intuitive Design
  • Ramp Vacuum Controller

Silver Innovation Award Winner for Instrumentation at PittCon 2020!

The rotary evaporator controller is particularly useful when you are looking to maintain pressure at a certain level as needed for botanical processing and rotary evaporation. Mounting is bench top.


  • Up to 4 chamber control with only 1 high-end vacuum pump for rotary evaporators up to 100 Liters and Falling Film Systems
  • Or use to control multiple vacuum ovens and a rotary evaporator
  • Fine control of target vapor pressure for more precise compound separation through distillation using this state of the art rotary evaporator controller
  • Enables using reliable and long lasting rotary vane oil pumps & dry scroll pumps in applications where diaphragm
    pumps were previously required
  • Keeps vacuum pumps near their base pressure resulting in greater longevity


  • Largest flow paths available to insure maximum flow for faster evaporation


  • Ease of use through precise automated control with programmable recipes and graphing of vacuum levels
  • Innovative valve control performs both proportional throttle and bleed vacuum control (vent to atmosphere)
  • The integrated bleed design allows you to quickly vent to atmosphere to stop bumping during processing
  • Numerical readings right on the LCD screen and one touch start, stop and release buttons


Valves: Wetted materials aluminum and Viton

Range of Control: 2 Torr to 760 Torr

Accuracy/ Control:+/- 5% of reading

Time to Convergence Within 5% after disturbance: <30 seconds

Integral Sensor for each of the 4 vacuum channels: Isolated Piezo sensor | SEN-775i

  • Integral Sensor Accuracy:+/- 2 Torr
  • Integral Sensor range: 1-775 Torr
  • Integral Sensor wetted materials: 316 Stainless steel, Isolated

Vacuum Path Orifice: Minimum orifice of 17.5 mm

Minimum Bleed Valve Orifice: 10 mm

Set-Points: Quickly dial in set-points with control knob

Vacuum Fittings: Staggered fittings on rear to enable either KF25 vacuum fittings or hose barb for rotovaps

Power: Auto sensing 110 V / 220 V 50/60 Hz power supply

Novel Vacuum Control: proportional throttle and proportional bleed control (vent to atmosphere) delivered from an integral dual valve module per channel

4 Channels: Individually control vacuum and bleed valves for each of 4 channels with dedicated isolated sensors

Output: Ability to be controlled remotely via USB for integration into larger systems

Recipes: Ramp Vacuum Controller: Program ramps and holds vacuum at different a duration and vacuum level

Enclosure: 12″ deep x 10.25″ wide x 5.25″ high

Weight: 25 pounds

Certifications: CE, UL, CSA (planned, built to CE standards) RoHS


User Manual Data Sheet Quick Start Guide

For more documentation, please visit DigiVac’s folder.

Technical Specifications

Units Torr, mbar
Control Range 1 – 775 Torr
Range with Accuracy 1 – 775 Torr (+/-5% of reading)
Sensor Type SEN-775i
Dimensions 12″ deep x 10.25″ wide x 5.25″ high
Certifications CE, UL, CSA, RoHS

Product Enquiry

Concerto | Vacuum Controller | Multiple Rotary Evaporator Controller (Up to 4)