12 Position N-EVAP
Nitrogen Evaporator
DESCRIPTION
The 12 position N-EVAP nitrogen evaporator (cat# 11155) is a compact unit that allows for up to 12 samples to be evaporated simultaneously. At each individual sample position, the gas flow can be controlled via a precision needle valve. This is ideal for the simultaneous evaporation of samples with varying evaporation end points. The sample tray has a spring tensioner which allows any test tube between 10-30 mm to be processed without any modifications to the instrument. An optional small sample holder allows samples with an outside diameter of 5-16 mm to be processed.
First introduced in 1959 as The Meyer N-EVAP, the 12 position N-EVAP (cat# 11155) was the first nitrogen dryer created by Organomation. It has proven to be an extremely durable, time tested and highly 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, enabling precise, uniform adjustments for your nitrogen blow down. This promotes efficient and safe sample reduction with minimal nitrogen waste.
Small Footprint
N-EVAP Model 111 requires under one square foot of bench space
Flexible
An adjustable sample holder design fits a wide variety of sample tubes and vials at once
Customizable
Options are available for use with acidic or flammable solvents, heat- or water-sensitive samples, and more
Individualized Control
Optimize evaporation of diverse samples with individual gas flow control at each vial
STANDARD FEATURES
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Nitrogen filter
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Adjustable flow meter, 0-10 LPM
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High pressure phthalate free tubing for safety
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High temperature limit switch for safety
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Dual band spring hoist assembly (except in dry bath model)
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Precision needle valve tube assembly
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Needles, 4 inch x 19 gauge with chrome plated brass hub and stainless steel shaft
OPTIONS (Add to main Cat# when purchasing)
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220v wiring harness (Option Code# -2), Cat# 11155-2
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Z-Purge/positive pressure purge case (Option Code# -Z), Cat# 11155-Z
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Acid resistant coating on instrument and needles (Option Code# -RT), Cat# 11155-RT
SPECS
| Instrumental Name | 12p N-EVAP | 12p N-EVAP | 12p N-EVAP |
| Bath Type | Water | Dry | None |
| Instrumental Catalog Number | 11155 | 11155-DA | 11155-O |
| Number of Sample Positions | 12 | 12 | 12 |
| 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 33 x 28 x 79 cm |
| Sample Holder Layout | Circular | Circular | Circular |
| Gas Manifold Layout | Single Ring | Single Ring | Single Ring |
| Test Tube Range (Standard Sample Holder) | 10-30mm OD | 10-30mm OD | 10-30mm OD |
| Test Tube Range (Optional Sample Holder) | 5-16mm OD | 5-16mm OD | 5-16mm 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 102 mm x 19 ga |
4.0 in x 19 ga 102 mm x 19 ga |
4.0 in x 19 ga 102 mm x 19 ga |
| Sample Tray Lift Mechanism | Dual Band Spring Hoist Assembly | None/Fixed | Dual Band Spring Hoist Assembly |
| Rotating, Leak Tight Gas Fitting | Standard | N/A | Standard |
| Standard Gas Input Range | 20-30 psig | 20-30 psig | 20-30 psig |
| Optional Gas Input Range with Optional Pressure Reducing Regulator | 30-160 psig | 30-160 psig | 30-160 psig |
| Acid Resistant Coating (Option Code -RT) | Optional | Optional | Optional |
| Heating Device Specs | |||
| Model Number |
5585 | 5085 |
N/A |
| 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 |
N/A |
| Outside Dimensions (w x d x h) | 13 x 11 x 7 in 33 x 28 x 18 cm |
13 x 11 x 7 in 33 x 28 x 18 cm |
N/A |
| 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 |
MODELS
| Catalog Number | Bath Type |
| 11155 | Water Bath |
| 11155-NT | No Teflon, Water Bath* |
| 11155-DA | Dry Bath |
| 11155-O | No Bath |
* No Teflon (-NT) units designed for PFAS analysis using EPA methods 533, 537 and 537.1.
**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.
RESOURCES
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N-EVAP Instruction Manual (Catalog #s 11106, 11155, 11250) for Water Bath Models - Version 22.5
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N-EVAP Instruction Manual (Catalog #s 11155, 11250) for Dry Bath Models - Version 22.5
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N-EVAP Instruction Manuel (Catalog #s 11106, 11155, 11250) for No Bath Models - Version 20.5
- 12 Position N-EVAP Brochure and Specifications
ACCESSORIES
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Small vessel sample holder, for vial outside diameters of 5-16 mm (cat# NA1132)
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Nitrogen generator (cat# NA1955)
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Pasteur pipette adapters (cat# NA0636)
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Pressure reducing regulator 0-160 psi (cat# NA0630)
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High temperature silicone fluid (cat# NA1240)
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Various needle sizes and gauges
REPLACEMENT PARTS
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P0627: Valve Tube Assembly – Post 1997
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P0607: Luer & washer for N-EVAP valve tube
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P0634: Tube Fitting nylon 3 part for N-EVAP valve tube