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AA990 Atomic Spectrophotometer

The AA900 Atomic Absorption Spectrometer is a versatile entry level instrument with a computer controlled Air/Acetylene flame for general laboratory requirements.

Due to its high sensitivity and excellent performance, the instrument can be used for a wide range of applications including: 

- Agriculture                  - Clinical                    -Environmental                   - Metal

- Food                           - Mining                     -Geological                         - Petrochemical

- Pharmaceutical           

The versatile instrument is available in three configurations:

AA990F    - Flame atomizer only

AA990G    - Graphite furnace atomizer only 

AA990FG  - Combined with flame and graphite furnace atomizer switch aromatically 

 Easy-to-use software

   - Automatic positioning and optimization of each hollow cathode lamp

   -  Control the fuel gas flows of the burner to optimize the best analytical.     Parameters

-  Control the Czerny – Turner Monochromator

-  Locate the wavelength and select the peak

-  Control the electronic parameters of the photomultiplier tube detector and hollow cathode lamp current 

-  Balance the absorbance and background energy

-  Control the ignition of the flame

-  Optimize the best heating program

 Integrated safety precautions for user protection by following:

   -  Burner Switch

   -  Flame Sensor

   -  Gas leak Sensor

   -  Drain Trap Sensor

   -  Power Loss Protection

   -  Circulation Water (graphite)

   -  Over Temperature Sensor (graphite)

 Precision accuracy with integrated correction system

 Life cycle value, best choice for less than 8 elements of analysis.

 AA990F / AA990G / AA990FG

Spectrometer System
Wavelength range190-900 nm
Light sourceHCL & Deuterium Lamp
Grating 1800 grooves/mm
Spectral bandwidth 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm with automatic changeover
Scan modeAutomatic
Optical systemSingle beam
Wavelength accuracy±0.15 nm
Wavelength resolution0.2 nm±0.02 nm
Wavelength reproducibility<0.15 nm
Baseline stability0.004 Abs/30 min
Background correction

Deuterium Arc & Self Reversal

Flame Analysis
Flame typeAir/acetylene
Sensitivity (Cu)2 μg/ml Absorption>0.280 Abs
Characteristic ConcentrationCu<0.04 μg/ml
Detection limitCu<0.006 μg/ml
RepeatabilityCu<1.0 %
Burner headTitanium alloy

High–efficiency glass / acid proof 

Pre-mix chamberCorrosion resistant
Graphite Furnace Analysis
Graphite head Transversal heating
Temperature rangeAmbient-2650 ℃
Heating program

Up to 10 steps. Drying, Ashing,

 Atomization, Cleaning 

Feedback Voltage and optical temperature control feedback
Sensitivity (Cu)50 ng/m Absorption>0.40 Abs
Detection limit Cd<0.01 ng/ml

Cu<3.0%, Cd<4.0%

Graphite tubesPyrolytically coated with platform
Sample sizeUp to 20μl
Graphite coolingWater circulator available
Data Processing
Operating programAA Win software
Analytical methods

Flame AA/ Flame AE/Graphite Furnace/Hydride Generation

Readout Modepeak height, peak area
CalibrationsMulti-standard calibration, standard addition, interpolation
Data storage & print out

parameters, data, spectra &

 calibration curves

Power Requirements
Main unit 220 VAC 50/60 Hz  200 W
Graphite power supply

380 VAC 50/60 Hz  7000W

Main unit

1100 * 500 * 450 mm / 75kg

Graphite power supply

500 * 500 * 50 mm / 70kg