20 Position Auto N-EVAP Nitrogen Evaporator

Catalog #

The automatic 20 position N-EVAP (Catalog # 11220-A) is the most advanced instrument Organomation has developed to date.  It combines our classic N-EVAP with timed automation technology, and optional nitrogen self generation. This unit can run in automatic or manual mode due to the integration of our unique pneumatic system.  The automatic mode removes samples from the heating medium when the designated time cycle has been completed.  You can also manually remove samples when the evaporation process is completed with the flip of a switch. The automatic concentration cycle reduces the likelihood of loss or damage to samples. A digital control system provides the operator with timed control of gas flow and bath temperature. A 9 position automatic instrument is also available for large glassware with outside diameters of 30-54 mm (cat# 11209-A). 

For more information about the automatic 20 position N-EVAP please contact a sales technician or request a quote above.


  • Automation: Samples are raised out of the bath and the gas flow is shut-off after the timed endpoint has been reached
  • Flexible:  A 9 position large sample instrument can be chosen to accommodate vials with a larger outside diameter in the range of 30-54 mm
  • Gentle:  N-EVAP nitrogen evaporators combine nitrogen blow down with a heated bath to gently concentrate delicate samples
  • Individualized Control: Gas flow can be controlled at each sample position via needle valves


Standard Features:

  • Adjustable flow meter, 0-20 lpm
  • Built-in pressure reducing regulator
  • High pressure phthalate free tubing for safety
  • High temperature limit switch for safety
  • Safety control cover
  • Digital temperature controller
  • Electronic timer
  • Dual nitrogen filters
  • Precision variable valve technology
  • Pressurized cylinder technology
  • Safety circuit breaker
  • Precision needle valve tube assembly
  • Set of 20 needles, 4 inch x 19 gauge with plated brass hub and stainless steel shaft


Optional Features: 

  • 220v wiring harness (Option Code# -2)
  • Z-Purge/intrinsically safe purge case (Option Code# -Z)
  • Acid resistant coating on instrument and needles (Option Code# -RT)
  • Large vessel instrument, 9 positions, for vial outside diameters of 30-54 mm (cat# 11209-A)