Atomic Absorption Spectrophotometer LX706AAS is an integrated flame/graphite furnace atomization system where the graphite system is fully automatic. They analyze the concentration of elements in a liquid sample based on energy absorbed from certain wavelength of light. They are equipped with turrets that can hold multiple lamps to reduce downtime between samples or allow for sequential analysis.

Catalog
Specifications
Wavelength range 190-900nm
Wavelength accuracy ≤±0.25nm
Wavelength repeatability ≤±0.15nm
Spectral bandwidth ≤±0.02nm
Stability of baseline
StaticZero Drift of Baseline ≤0.005Abs/30min, Baseline transient noise ≤0.001Abs
DynamicZero Drift of Baseline ≤0.005Abs/10min, Baseline transient noise ≤0.005Abs
Light source system
Lamp turretMotorized 8-lamp turret
Lamp rotationAutomatically rotating light stand that can be automatic switch and optimize
Lamp positionEach lamp position can be lighted and preheated optionally
Optical system
MonochomatorC-T type monochromatic
Grating1800 lines/mm
Blazed wavelength250nm
Focal length277mm
Spectral bandwidth0.1nm, 0.2nm, 0.4nm, 0.8nm and 1.6nm (debugging slit) switching automatically
Graphite furnace
Temperature rangeRoom temperature~3000℃
Heating rate3000℃/s
Graphite tube dimensions28mm(L)×8mm(OD)
Characteristic massCd≤0.5 ×10-12g, Cu≤5 ×10-12g, Mo≤1×10-11g
PrecisionCd≤3%, Cu≤3%, Mo≤4%
Detection and Data processing system
DetectorCR131 Photomultiplier with high sensitivity and wide spectral range
SoftwareUnder windows operating system
Analytical methodWorking curve auto-fitting; standard addition method; automatic sensitivity correction, automatic calculation of concentration and content
Repeat times1-99 times, automatic calculation of mean value, standard deviation and relative standard deviation
Multi-task functionsSequential measurement for multi-element determination to the same sample
Condition readingWith model function
Result printingMeasurement data and final analytical report printout, editing with Excel
Communication portStandard RS-232 serial port communication
Power requirement for main unit Monophase alternating current, 220V, average power dissipation ≤0.3kVA
Power requirement for accessories Monophase alternating current, 220V, peak power dissipation 0.3kVA
Packing dimension (L x W x H) and Gross weight 1280 x 750 x 830 mm, 150 kgs
Features
  • The changeover of the integrated flame and graphite furnace atomizer is automatically controlled featuring easy operation and time saving which eliminates human labor

  • To perform flame emission analysis, flame emission burner head can be installed for alkali metals as K, Na etc.

  • Provided with automatic 8-lamp turret, automatic adjustment of lamp current and optimization of light beam position

  • Parameters like Wavelength scanning, peak picking, change in spectral bandwidth, optimization of position parameters, automatic ignition and gas flow setting are done automatically

  • The graphite furnace analysis is fully reliable and automatic, dual curve mode light-controlled temperature control technique, temperature auto-correction technique, ensures fast heating, good temperature reproducibility and high analytical sensitivity

  • Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact

  • Equipped with alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system

  • Protection function and alarms for insufficient carrier gas and protective gas pressure, insufficient cooling rate supply and over-heating in graphite furnace system

  • AAS analysis is made under windows operating system which is easy-to-use with fast parameter setting and optimization

  • In order to increase the sensitivity in flame analysis, two high performance HCLs can be mounted on the lamp turret

  • Data processing system: provided with analytical methods – Working curve auto-fitting standard addition method, automatic sensitivity correction, automatic calculation of concentration and content with windows operating system software

  • Experiments can be repeated 1~99 times along with automatic calculation of mean value, standard deviation and relative standard deviation

  • Equipped with multi task functions- sequential determination of multi-elements in the same sample, condition reading- with model function and result printing- measured data and final analytical report printout in excel

  • Provided with standard RS-232 serial port connection

  • Hydride vapor generator can be connected for hydride analysis

Applications
  • Used for testing the metal element concentration analyze in agriculture, chemical, environmental study, food, mining, and petrochemical, pharmaceutical industry.

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