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High-Quality, American-Made Lab Equipment


9 Position MULTIVAP
Nitrogen Evaporator


The 9 position MULTIVAP is a high temperature dry block model designed to evaporate large volume samples. The benchtop evaporator contains a rectangular gas distribution system mounted on a frame and dual post assembly, allowing the needles to be raised and lowered with ease. The manifold delivers nitrogen gas to the needles or glass pipettes, which direct the gas onto the sample’s surface. This method results in rapid solvent evaporation and sample concentration. In order to conserve nitrogen gas, the manifold has a toggle switch for every row of 3 samples, which allows the individual rows to be shut off when evaporating batches of less than 9 samples. Nitrogen gas flow is also controlled by an adjustable flow meter and a built-in pressure regulator. 

The 9 position MULTIVAP uses a heated aluminum dry block to reach evaporative temperatures ranging from 30°C to 120°C. An unheated version is available for evaporations that will be performed at ambient temperatures. The sample block is built to fit beakers with an outside diameter of 50 mm, and 9 beakers are included with the instrument. If another sample size is to be used, inserts can be purchased and customized for your sample.  Please specify sample size (outside diameter and length to nearest 0.1 mm) when placing an order for inserts. All models can withstand contact with organic solvents; however, acid resistant models are also available for use with corrosive solutions. 


Evaporate large volume samples of up to 100 mL each


Digital controls allow exact temperature regulation

Wide Temperature Range

High temperature heat block can be programmed up to 120 °C for hard-to-evaporate solvents


Conserve gas by using ON/OFF valve for rows not in use


  • Adjustable flow meter, 0-25 lpm

  • Gas distribution manifold

  • Nitrogen filter

  • Dual band hoist spring assembly

  • Built-in pressure reducing regulator

  • Electronic timer

  • Safety control cover plate

  • Digital temperature controller

  • High temperature limit switch for safety

OPTIONS (Add to main Cat# when purchasing)

  • 220v wiring harness (Option Code# -2), Cat# 11809-2

  • Z-Purge/positive pressure purge case (Option Code# -Z), Cat# 11809-Z

  • Acid resistant coating on instrument and needles (Option Code# -RT), Cat# 11809-RT

  • Pasteur pipette adapters in place of needles (Option Code -P), Cat# 11809-P

  • Manifold and stand only: no heating platform (Option Code -O), Cat# 11809-O





Instrumental Name 9 Position MULTIVAP
Heater Type Dry Block None
Instrumental Catalog Number 11809 11809-O
Number of Sample Positions 9 9
Overall Dimension (w x d x h) 16 x 14 x 30 in
41 x 36 x 76 cm
13 x 15 x 26 in
33 x 38 x 66 cm 
Sample Holder Layout Rectangular Rectangular
Gas Manifold Layout 3 x 3 Array 3 x 3 Array
Center to Center Spacing
Between Positions
2.31 in
5.87 cm
2.31 in
5.87 cm
Sample Vial Diameter 50 mm OD beakers (Included) 50 mm OD beakers (Included)
Optional Test Tube Diameter 16-40 mm OD 16-40 mm OD
Gas Flow Control On/Off Valve Every row of 3 Every row of 3
Gas Flow Meter Range 0-25 L/min 0-25 L/min
Stainless Steel Needles
(Length & Gauge)
4.0 in x 16 ga
102 mm x 16 ga
4.0 in x 16 ga
102 mm x 16 ga
Needle Guide Optional, for test tubes Optional, for test tubes
Hoist Assembly Dual Pulley & Band Springs Dual Pulley & Band Springs
Integrated Control Box with Timer for Nitrogen & Heat Standard N/A
Built-in Gas Regulator Input 30-110 psig 30-110 psig
Acid Resistant Coating (Option Code -RT) Optional Optional
OA-SYS Heating Device Specifications
Model Number 9156 N/A
Outside Dimensions
(w x d x h)
16 x 14 x 6.5 in
41 x 36 x 15 cm
Total Wattage 900 W N/A
Temperature Range 30-120 psig Ambient
Temperature Controller Type Digital Electronic with LED Display N/A
Controller Accuracy +/- 2 °C N/A


Amy & David CTA


  • Nitrogen generator (cat# NA1955)

  • Custom sized inserts (cat# NA1891)

  • Pasteur pipette adapters (cat# NA0636)

  • Luer plugs (cat# NA1307)

  • Various needle sizes and gauges