High-Quality, American-Made Lab Equipment


    20 Position Auto N-EVAP
    Nitrogen Evaporator


    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 benchtop evaporator 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.


    Samples are raised out of the bath and nitrogen flow is shut off after the timed endpoint has been reached


    An adjustable sample holder design fits a wide variety of sample tubes and vials at once


    Digital controls allow exact temperature regulation

    Individualized Control

    Optimize evaporation of diverse samples with individual gas flow control at each vial

    HubSpot Video


    • Adjustable flow meter, 0-25 LPM

    • Built-in pressure reducing regulator

    • High pressure phthalate free tubing

    • 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


    • 220v wiring harness (Option Code# -2) 

    • Z-Purge/positive pressure purge case (Option Code# -Z) 

    • Acid resistant coating on instrument and needles (Option Code# -RT)


    Amy & David CTA


    Instrumental Name Automatic 20 Position N-EVAP
    Bath Type Water
    Instrumental Catalog Number 11220-A
    Number of Sample Positions 20
    Overall Dimension (w x d x h) 19 x 18 x 36 in
    49 x 46 x 92 cm
    Sample Holder Layout Circular
    Gas Manifold Layout Single Ring
    Test Tube Range (Standard Sample Holder) 10-30mm OD
    Gas Flow Meter 0-25 L/min
    Stainless Steel Needles (Length & Gauge) 4.0 in x 19 ga
    102 mm x 19 ga
    Built-in Nitrogen Gauge Input 30-110 psig
    Sample Tray Lift Mechanism Gas Piston
    Rotating, Leak Tight Gas Fitting Standard
    Built-in Control Box with Timer for Nitrogen & Heat Standard
    Acid Resistant Coating (cat#-RT) Optional
    Heating Device Specs
    Model Number
    Heating Medium Water
    Inside Dimensions (Diameter x Depth) 11 x 11 x 5.5 in
    49 x 46 x 14 cm
    Outside Dimensions (w x d x h) 19 x 18 x 7 in
    49 x 46 x 18 cm
    Total Wattage 1100 W
    Bath Temperature Range 30-100 °C
    Temperature Controller Type
    Digital Electronic with LED Display
    Controller Accuracy +/- 2 °C



    • Nitrogen generator (Cat# NA1955)

    • Pasteur pipette adapters (Cat# NA0636)

    • Pressure reducing regulator 0-160 psi (Cat# NA0630)

    • High temperature silicone fluid (Cat# NA1240)

    • Various needle sizes and gauges


    • NA1955: Generator, Nitrogen Gas, 20 L/min

    • NA0603: Needles 4in x 19ga, SStl 304 shaft, brass plated hub, dozen

    • NA0636: Pasteur pipet adapter, male luer to fluted nut, dozen