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Atomic Absorption Spectrophotometers– LAAS Series
  • The flame analysis technique adopting oxygen rich air acetylene flame as the substitution for nitrous oxide-acetylene flamefor high temperature element analysis. (Only for LAAS-110A)
  • Automatic hollow cathode lamp changeover. The high performance HCL can be used directly.
  • Auto-changeover and position optimization of integrated flame/graphite furnace atomizer.
  • Auto-ignition, automatic spectral bandwidth selection. Fully automated wavelength scanning and peaking.
  • Light-controlled graphite furnace power supplier, adopting FUZZY-PID temperature control technique and dual curve working mode, ensures fast heating, accurate and stable temperature control and good temperature reproducibility. Temperature auto-correction function provided.
  • Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact.
  • Perfect safety protection measures, alarm and automatic safety protection to fuel gas leakage, air pressure deficiency and abnormal flame extinction; spray chamber made of explosion proof material, all titanium burner and explosion proof stopper for flame analyses; alarm and protection function to Argon pressure deficiency, insufficient cooling water supply, over-heating and over-current etc. in graphite furnace analysis..
  • Adopting large scale programmable logic array and Inter IC technique and highly reliable adapters for electric design.
  • Easy and flexible WINDOWS Operating System, with multi-windows processing technology to observe the signal profile, the measured results and the calibration curve at the same time. Various analytical programs, data, signals and graphics can all be stored for later use.
Technical Specification:

Model No.

Atomic Absorption Spectrophotometers– LAAS 110A

Atomic Absorption Spectrophotometers– LAAS 120A

Atomic Absorption Spectrophotometers– LAAS 130A

Main Specification Wavelength Range 190-900nm
Wavelength Accuracy ±0.25nm
Resolution Two spectral lines of Mn at 279.5nm and 279.8nm can be energy separated with the spectral bandwidth of 0.2nm and valley- peak ratio less than 30%
Baseline Stability ≤0.004A/30min
D2 lamp Background Correction 1A is better than 30 times
S-H Background Correction 1.8A better than 30 times -
Hollow Cathode Lamps Lamp Turret 6-lamp turret, Auto- alignment, fully automated scan and Peak-picking. 4-lamp turret, Auto-alignment,
fully automated
scan and peak-picking.
Lamp Current Adjustment Automatic adjustment and display. Wide pulse current: 0~25mA, Narrow pulse current: 0~10mA  
Lamp Power Supply mode Powered by two pulses simultaneously
Optical System Monochromator 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 automatic change
Atomizer Flame/Graphite furnace Flame/Graphite furnace atomizer auto change over
Detection and Data Processing System Detector Photomultiplier with high sensitivity and wide spectral range
Software MS-Windows 98/Me Operating System
Analytical Method Working Curve Method (1st order and 2nd order fitting)Sensitivity auto-correction, Standard Addition Method
Concentration Auto-calculation of concentration and content
Repeatable Measurement Maximum 20 times of repeat measurement, automatic calculation of mean value, standard deviation and relative standard deviation
Multi-task Function Sequential measurement of multi-elements in one sample
Condition Reading With model function
Result Printing Measurement of  Data and Final Analysis report printout, editing with Excel
Flame Analysis Burner 10cm single slot all titanium burner
Spray Chamber All plastic spray chamber
Nebulizer High efficiency glass nebulizer with metal sleeve
Position Adjustment Adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner.
Protection of Gas System Fuel gas leak protection,abnormal flame extinction alarm, air-pressure deficiency protection and explosion-proof device
Flame Ignition Automatic
Characteristics Concentration and Detection Limit Normal Air C2H2 Flame Cu: Characteristic concentration≤0.025mg/L, Detection limit
Oxygen Rich Air C2H2Flame Ba: Characteristic concentration≤ 0.22mg/L
Al: Characteristic concentration ≤ 0.4mg/L ---
Hydride Generation Hg: detection limit≤0.5µg/L
Graphite Furnace Analysis Temperature Range 20~3000ºC
Light-Controlled Temperature Range 1500ºC -3000ºC, temperature auto-correction
Temperature Control Accuracy ≤1%
Characteristic Mass Cd ≤0.5 ×10-12g, Cu ≤5 ×10-12g,Mo ≤1×10-11g
Precision RSD ≤4%
Safety Protection Protections for over-heating,over-current, and less cooling water and argon pressure monitoring functions
(L x W x H) mm
Main Unit 1020 (L) × 492 (W) × 537 (H)mm
Graphite Furnace 420 (L) × 420 (W) × 460 (H) mm
Weight Main Unit 80kg , Unpacked
Graphite Furnace 50kg
Catalog No. 35260101 35260102 35260103