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High-Quality, American-Made Lab Equipment


6 Position N-EVAP
Nitrogen Evaporator


The 6 position N-EVAP’s ability to expand the sample size range with an optional large sample holder makes it an ideal instrument for laboratories that will be evaporating up to 6 samples at once and are using a wide range of sample flask outside diameters. The standard instrument fits samples with an outside diameter of 10-30 mm, and the optional large sample holder can accommodate samples with an outside diameter of 30-56 mm.

The 6 position N-EVAP sample concentrator (cat# 11106) was adapted from the 12 position N-EVAP (cat# 11155) in the early 1970s. Since its inception, it has proven to be durable, reliable, and the most affordable member of Organomation’s N-EVAP line. These economical units provide controlled concentration of sample vials through the application of nitrogen gas within a heated water bath. The N-EVAP’s circular rotating design permits each sample to be accessible from the front of the instrument for easy insertion and retrieval. The chrome plated needle valves are individually milled from solid brass, and allow precise adjustment of the gas flow rate at each sample position. This promotes efficient and safe sample reduction with minimal nitrogen waste. The stainless-steel construction of the bath ensures that the instrument is long lasting.

Small Footprint

N-EVAP Model 111 requires under one square foot of bench space


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


For tubes outside of the standard 10-30 mm range, choose from optional small or large sample holders to accommodate your glassware

Individualized Control

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


  • Nitrogen filter

  • Adjustable flow meter, 0-10 LPM

  • Phthalate free silicon tubing eliminates contamination concerns

  • High temperature limit switch for safety

  • Dual band spring hoist assembly (except in dry bath model)

  • Precision needle valve tube assembly

  • Needles, 4-inch x 19 gauge with chrome plated brass hub and stainless-steel shaft

OPTIONS (Add to main Cat# when purchasing)

  • 220v wiring harness (Option Code# -2), Cat# 11106-2

  • Z-Purge/positive pressure purge case (Option Code# -Z), Cat# 11106-Z

  • Acid resistant coating on instrument and needles (Option Code# -RT), Cat# 11106-RT





Instrumental Name 6 Position N-EVAP 6 Position N-EVAP 6 Position N-EVAP
Bath Type Water Dry None
Instrumental Catalog Number 11106 11106-DA 11106-O
Number of Sample Positions 6 6 6
Overall Dimension (w x d x h) 13 x 11 x 31 in
33 x 28 x 79 cm
13 x 11 x 27.5 in
33 x 28 x 70 cm
12 x 8 x 31 in
31 x 21 x 79cm
Sample Holder Layout Circular Circular Circular
Gas Manifold Layout Single Ring Single Ring Single Ring
Test Tube Range (Standard) 10-30 mm OD 10-30mm OD 10-30mm OD
Test Tube Range (Optional) 30-56 mm OD 30-56 mm OD 30-56 mm OD
Gas Flow Meter 0-10 L/min 0-10 L/min 0-10 L/min
Stainless Steel Needles (Length x Gauge) 4.0 in x 19 ga
10 mm x 19 ga
4.0 in x 19 ga
10 mm x 19 ga
4.0 in x 19 ga
10 mm x 19 ga
Sample Tray Lift Mechanism Dual Band Spring Hoist Assembly None/Fixed Dual Band Spring Hoist Assembly
Standard Gas Input Range 20-30 psig 20-30 psig 20-30 psig
Gas Input Range w/Optional Pressure Reducing Regulator 30-160 psig 30-160 psig 30-160 psig
Acid Resistant Coating Optional Optional Optional
Heating Device Specs
Model Number
5585 5085
Heating Medium Water Aluminum Beads (Glass Beads in RT Models) None
Inside Dimensions (Diameter x Depth) 8.5 x 4.5 in
21.6 x 11.4 cm
8.5 x 4.5 in
21.6 x 11.4 cm
Outside Dimensions (w x d x h) 13 x 11 x 7 in
33 x 28 x 18 cm
3 x 11 x 7 in
33 x 28 x 18 cm
Total Wattage 550 W 500 W N/A
Bath Temperature Range 30-90 °C 40-130 °C N/A
Temperature Controller Type
Mechanical Thermostat Mechanical Thermostat N/A
Controller Accuracy +/- 2 °C +/- 2 °C N/A


Amy & David CTA


Catalog Number Bath Type
11106 Water Bath
11106-DA Dry Bath
11106-O No Bath*





*All “-O” models come with a base and stand assembly instead of a heated bath. These instruments are designed for evaporation procedures performed at ambient temperature.


  • Large vessel sample holder, for vial outside diameters of 30-56 mm (cat# NA1113)

  • 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


  • P0627: Valve Tube Assembly – Post 1997

  • P0607: Luer & washer for N-EVAP valve tube

  • P0634: Tube Fitting nylon 3 part for N-EVAP valve tube