Flame Atomic Absorption Spectrophotometer DW-320

Feature of Atomic Absorption Spectrophotometer DW-320

High cost-effective flame AAS

Reasonable design, adopting the same key parts as in high-end instruments, ensures basic functions but less automation to provide an economic model for users

Reliable integration of the main unit with the microprocessor

Built-in microprocessor with necessary auto-control and data processing functions achieve high reliability of the instrument.

Simple and East Operation

Eye-catching digital display, multi-function data processing ability, and fast function-key direct input realize easy and fast analysis.


Main Specification Wavelength range 190-900nm
Wavelength accuracy ±0.5nm
Resolution Two spectral lines of Mn at 279.5nm and 279.8nm can be separated with the spectral bandwidth of 0.2nm and valley-peak energy ratio less than 30%.
Baseline stability 0.005A/30min
Background correction The D2 lamp background correction capability at 1A is better than 30 times.   
Light Source System 2 lamps are powered simultaneously (one preheating)
Lamp current adjustment range:  0~20mA,                               
Lamp power supply mode Powered by 400Hz square pulse
Optical System Monochomator Single beam, Czerny-Turner design grating monochromator
Grating 1800 l/mm
Focal length 277mm
Blazed Wavelength 250nm
Spectral Bandwidth 0.1nm, 0.2nm, 0.4nm, 1.2nm 4 steps
Adjustment Manual adjustment for wavelength and slit
Flame Atomizer Burner 10cm single slot all-titanium burner    
Spray chamber Corrosion resistant all-plastic spray chamber.
Nebulizer High efficiency glass nebulizer with metal sleeve, sucking up rate: 6-7mL/min
Position adjustment Manual adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner
Gas line protection Fuel gas leakage alarm
Detection and Data Processing System Detector R928 Photomultiplier with high sensitivity and wide spectral range.
Electronic and micro-computer system Automatic adjustment of light source power. Light energy and negative high-voltage auto-balance
Display mode LED display of energy and measurement values, concentration direct reading
Read mode Transient, time average, peak height, peak area.
  Integral time is selectable in the range of 0.1-19.9s.
Scale expansion 0.1~99
Data processing mode Automatic calculation of mean, standard deviation and relative standard deviation. Repeating  number is in the rang of 1-99
Measurement mode Automatic curve fitting with 3~7 standards;  Sensitivity auto-correction
Result printing Measurement data, working curve, signal profile and analytical conditions can all be printed out.
Instrument self-check Check current status of each function key
Characteristic Concentration and Detection Limit Air-C2H2 flame Cu: Characteristic concentration≤0.025mg/L, Detection limit≤0.006mg/L;
Function Expansion Hydride vapor generator can be connected for hydride analysis.
Dimensions and Weight 1020 x 490 x 540 mm, 80kg unpacked