Double Beam DW-AA320N 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-AA320N 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.
YouTube video
DW-AA320N Installation and Operation video
YouTube video
Double Beam Atomic Absorption Spectrophotometer

Specifications of the PDW-AA320N Spectrophotometer:

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 YQE-213

Nitrous oxide regulator


recirculating cooling water system

DW-AA320N Packing List

1Main instrument1
2Power cable1
3Operating manual1
4Burner unit1
5Water-separating gas filter base1
7Threaded sleeve10
8Dust cover1
10Sheet gasket4
11Scale plate for adjust the light1
13Pul-out piece spring1
14Input Joint1
15Output Joint1
16Closure head2
17Hand knob1
18Scale disk1
19Acetylene Regulator YQE-2131
20Water-separating gas filter QSL1/4’1
21PU plastic tube Φ 6*115M
22PVC tube Φ10*1.43M
23O gland ring D10*210
24O gland ring D16*24
25O gland ring D32*36
26O gland ring D40*36
27Fuse 2A5
28Fuse 0.5A5
29Fuse 0.1A5
30Nut runner4
32Glass Atomizer1
33Hollow cathode lamp Cu1
34Oil-free diaphragm air compressor1

DW-AA320N Spectrophotometer Display

Double Beam DW-AA320NR Atomic Absorption Spectrophotomete

Customer Feedback of DW-AA320N Spectrophotometer

DW-AA320N 1

Other Spectrophotometer