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BUCHI™ V-850 and V-855 Vacuum Controllers

Universal units for the display, adjustment and control of all vacuum systems

Manufacturer: buchi™  047231

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Catalog No. 05-403-511

  • / Each

Description & Specifications


Height (English) 4.17 in.
Height (Metric) 106mm
Length (English) 4.7 in.
Length (Metric) 120mm
Voltage 100/230V
Weight (English) 1.19lb.
Weight (Metric) 540g
Width (English) 6.3 in.
Width (Metric) 160mm
Certifications/Compliance CE, CSA, UL
Electrical Requirements 30VDC (with connection to Rotavapor and Vacuum Pump V-700/710) or 85 to 264VDC power pack
For Use With (Equipment) Rotavapor R-210
Product Type V-850 Vacuum Controller
Includes Power pack
Temperature (Metric) Operating +10° to +40°C
Vacuum Level 1400 to 0mbar (hPa);, 1050 to 1 torr

Eliminate bumping with evaporation applications by introducing precision control and avoiding overly aggressive ultimate vacuum settings. Compact, intuitive units are suitable for numerous applications. Integrated aeration valve and pressure sensor are chemically resistant. Pair with either a Buchi V-700/710 vacuum pump for hysteresis-free vacuum control or add a valve unit along with a V-850/855 and control your house vacuum with precision.

V-850 Vacuum Controller features:

  • Easy operation with large control knob and 4 in. graphic display
  • Timer function for process termination after prespecified time
  • Buchi Wizard - quick & easy menu setup
  • LabVac function - continuous operation with minimal energy requirements
  • Solvent Library - 43 solvents preprogrammed to simplify parameter selection
V-855 Vacuum Controller offers these additional features:
  • Gradient and repetition function for gentle distillation of your most demanding solvents
  • Stores up to 15 processes programmed using gradient mode
  • EasyVac - automatic process control based on vapor pressure detection
  • Automatic distillation - requires unique stage probe