Double Beam DW-AA320NR Atomic Absorption Spectrophotometer (1 Lamp Stand)

An atomic absorption spectrometer(AAS), also known as atomic absorption spectrophotometer, analyzes metal elements according to the effect of ground state atomic vapor on characteristic radiation absorption. It can determine trace or trace elements sensitively and reliably.

  • Optional Accoessories:
  • Graphite Furnace
  • Air Compressor
  • Printer
  • Burner Head
  • Software ( No computer )
  • Glass atomizer
  • Hydride Generator
  • Chilled water unit
  • Ventilating Hood ( 1.5 meters )

Features of DW-AA320NR Atomic Absorption Spectrophotometer

  1. Build-in computer data processing and LCD display: stable and reliable with the functions of integral holding, peak height and area, auto zero adjusting, deuterium lamp background correction, multi-linear and nonlinear curves fitting, various parameters, and working curves displayed in the screen and report printing, etc. It is equipped with an interface for externally linking PC.
  2. Stability: Double-beam system can automatically compensate for the light source drift and wavelength drift caused by the variation of temperature (with the function of eliminating the affection of wavelength drift on the baseline stability) and electronic circuit drift so as to reach good basic line stability.
  3. Quickly: The cathode lamp needs not to be pre-heated for a long time and the sample can be analyzed immediately. It is the preferred instrument chosen by users to conduct analysis of multiple kinds of elements and fast analysis of samples.
  4. High precision of measurement: The gas path system is equipped with precision pressure stabilizing and current stabilizing devices to reach stable flame and low noise. A specially designed fine light beam passes through the flame to ensure a high precision analytical test and low characteristic concentration
  5. High energy optical path: A total reflection system is adopted to eliminate the color differences in the full range. By means of chemical conversion, a round light spot of the light source becomes a long light spot, which enters into the slit. Therefore the light flux of the double beam is enhanced.
  6. Long-life and anti-corrosive atomization system: The burner is made of a new type of titanium alloys, anti-corrosive and fast thermal equilibrium. It meets the requirement of measurement sensitivity without water-cooling.
  7. Multi-functional analysis mode: for methods of flame absorption, flame emission, graphite furnace atomic absorption, and hydride generation.
  8. Safe and reliable gas path system: Special devices of quick gas conversion and safety protection can be used to analyze air-acetylene flame as well as nitrous oxide-acetylene flame and extend the analytic elements to reach more than 60.
  9. Complete set of accessories: to be supplied with the instrument and ready for use after they are purchased.

Specifications of the Product:

WL range (nm)


WL accuracy


WL repeatability

0.3nm (single direction)

Spectrum bandwidth

0.2nm, 0.4nm, 0.7nm, 1.4nm, 2.4nm, 5.0nm



Base line stability


Characteristic concentration of copper


Detection limit of copper


Background calibration ability

Greater than 30 times





Power supply

220V 3A, 50Hz


160Kg (Main instrument),     65Kg ( Accessories )

Package Dimensions

1220x770x730mm (Main instrument) ,    800x400x900mm  ( Accessories ) Titanium burner 5cm

Nitrous oxide generator

Hydride generator

Optional Accessories

Graphite tubes

Acetylene Regulator YQE213

Nitrous oxide regulator


recirculating cooling water system

DW-AA320N Packing List

Item.                                         Descriptions                                                          Qty.
1                                              Main instrument                                                       1
2                                              Power cable                                                             1
3                                              Operating manual                                                     1
4                                              Burner unit                                                              1
5                                              Water-separating gas filter base                                 1
6                                              Bush                                                                       10
7                                               Threaded sleeve                                                      10
8                                              Dust cover                                                               1
9                                              Gasket                                                                    15
10                                             Sheet gasket                                                           4
11                                             Scale plate for adjust the light                                   1
12                                             Joint                                                                       1
13                                             Pul-out piece spring                                                  1
14                                             Input Joint                                                               1
15                                             Output Joint                                                             1
16                                             Closure head                                                            2
17                                              Hand knob                                                              1
18                                           Scale disk                                                                  1
19                                           Acetylene Regulator YQE-213                                       1
20                                           Water-separating gas filter QSL1/4’                               1
21                                           PU plastic tube Φ 6*1                                                 15M
22                                           PVC tube Φ10*1.4                                                      3M
23                                           O gland ring D10*2                                                     10
24                                           O gland ring D16*2                                                     4
25                                            O gland ring D32*3                                                    6
26                                           O gland ring D40*3                                                     6
27                                            Fuse 2A                                                                    5
28                                           Fuse 0.5A                                                                  5
29                                           Fuse 0.1A                                                                  5
30                                           Nut runner                                                                 4
31                                           Tools                                                                         1
32                                           Glass Atomizer                                                            1
33                                           Hollow cathode lamp Cu                                               1
34                                            Oil-free diaphragm air compressor                                1

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Double Beam DW-AA320NR Atomic Absorption Spectrophotomete

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