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BUCHI™ Rotavapor™ RII Evaporation Systems

For quick, gentle and economical evaporation procedures without cutting corners


Capacity 4000mL (135.25 oz.)
Certifications CE, CSA, UL
Depth (English) 16.53 in.
Depth (Metric) 42cm
Model RII
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Requires:  Vacuum pump or system and associated connections.


Direct exposure of plastic-coated glassware to chlorinated solvents and aggressive reagents should be avoided. After extensive use, coating on glassware may wear and loosen from surface, increasing risk of injury.

Products in this grouping may have voltages other than the standard US 110/115V. Please review and confirm your selection before completing your order. Some of these products may not be returned.

Catalog Number Mfr. No. For Use With (Application) Includes Product Type Price Quantity    


Standard applications where height is limited 1L Evaporating and receiving flask, diagonal condenser Glass Assembly A Rotary Evaporator CALL N/A N/A
 Please call Customer Service at 1-800-234-7437 or send an email to for assistance.
Description & Specifications


Capacity 4000mL (135.25 oz.)
Certifications CE, CSA, UL
Depth (English) 16.53 in.
Depth (Metric) 42cm
Model RII
Speed 20 to 280rpm
Temperature Range (Metric) 20° to 95°C
Electrical Requirements 100/120V 50/60Hz
Height (English) 33.07 in.
Height (Metric) 84cm
Hertz 50/60Hz
Taper 24/40
Temperature Range (English) 68° to 203°F
Voltage 100/120V
Volume (Metric) 50 to 4000mL
Wattage 1700w
Weight (English) 35.2 to 39.6 lb.
Weight (Metric) 16 to 18kg
Width (English) 23.62 in.
Width (Metric) 60cm

Rotavapor RII delivers the same performance as other Buchi Rotavapors, with just the features you need. Rotating flask produces effective heat transfer while ensuring thorough mixing and avoiding overheating of contents.

Modular design, versatile operation

  • Choice of three condenser assemblies and two joint options; for 1 to 3L flasks
  • Handle evaporating flask sizes from 50 to 4000mL; receiving flasks from 500 to 3000mL
  • Kettle principle allows for quick removal of the water bath for easy cleaning