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Atomic Absorption Spectrophotometer

  • Double Beam AAS Spectrophotometer with PC controlled system and software
  • Measuring Mode are Atomic Absorption, emission and concentration
  • Long-life and anti-corrosive atomization system
  • High precision of measurement

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Features

  • Double-beam optics automatically compensate the light source drift and wavelength drift caused by the variation of temperature (with the function of the eliminating the affection of wavelength drift on the base line stability) and electronic circuit drift so as to reach a good basic line stability.
  • The cathode lamp needs not be pre-heated for long time and sample can be analyzed immediately for multiple kinds of elements and fast analysis of samples.
  • Gas path system is equipped with precision pressure stabilizing and current stabilizing devices to reach stable flame and low noise. Specially designed fine light beam passes through the flame to ensure a high precision analytical test and low characteristic concentration.
  • The burner is made of titanium alloys, anti- corrosive and fast thermal equilibrium. It meets the requirement of measurement sensitivity without water-cooling.
  • Greater than 0.9 abs for 5 mg/L copper solution with an RSD of less than 0.5%
  • Motorized turret 8 Lamps equipped with lamp history function and log function with automatic electronics operation.
  • Front-surfaced, refractive optics with protective coating for minimal loss of transmission.
  • System has the Auto Sampler available

Specifications

Technical parameters Model NOVA8000 Series
Configuration Flame System Graphite System
Linearity Error (%) ≤10
Wavelength error ±0.15nm
Wavelength repeatability ≤ 0.05nm
Wavelength range (185～910) nm
Spectral bandwidth Spectral bandwidth 0.1, 0.2, 0.4, 1.0, 2.0nm five automatically selectable.
Photometer High luminous flux total reflection dual beam spectroscopy system, single beam / dual beam any automatic switching.
Baseline stability Zero-point drift: ± 0.002Abs/30 min; transient noise: ≤ 0.0025Abs
Resolution Mn 279.5 nm and 279.6 nm two spectral lines can be resolved, and the peak and valley energy values between the two lines is less than ≤ 25% of the energy
Turning lamp holder Eight-lamp position automatic conversion lamp holder, automatic collimation, 8-lamps can be preheated and lit at the same time. The lamp holder is designed to house the HCL and EDL lamps with Fully Automated Lamp selection, alignment and operation is software controlled.
Lamp Life >5000 hours
Lamp Recognition Lamps are assigned at the fixed positions and changed automatically through software selection. RFID is optional.
Characteristic concentration (Cu) 0.03μg/ml/1%.
Monochromator Czerny -Tuner Holographic grating & rotational (1,800 lines/mm)
Detection limit Flame method for copper measurement: ≤ 0.002 μg/mL Graphite Furnace method for Lead (Pb) measurement: ≤ 0.001 μg/mL(Cd < 0.3X10-12g
Repeatability RSD ≤ 0.25 %.
Combustion head Titanium metal combustion head.
Nebulizer High-efficiency glass, stainless steel nebulizer.
Atomizing chamber Explosion-proof and corrosion-resistant material atomizing chamber.
Graphite furnace Highly stable Flame Atomizer Support Integrated Autosampler Heated graphite furnace atomizer (HGA) Integrated autosampler operation and furnace camera optional
Graphite Furnace System Control Temperature ranges from ambient temperature to 3,000 °C, programmable in intervals of 0.2 °C to 3,000 °C/s Real-time temperature control Self-Test enabled system
Detector High sensitivity Photo-Multiplier Tube (PMT) detector
Background Correction Automatic deuterium lamp and self-reversal deuterium correction: can correct 1A background, greater than or equal to 60 times the correction capacity.
Data Processing Measurement method: flame method, graphite furnace method Concentration calculation method: Standard curve method (1~2 times curve), auto-fit, standard addition method. Repeated measurement times: 1-99 times, calculate the average value, give standard deviation and relative standard deviation. Result printing: Parameter printing, data result printing, graphic printing.

Auto Sampler

Function Flame-graphite furnace dual use 108 position
Number of injection bits Positive and negative 110 bits
Linearity >0.999
Focal Length 320
Cross-contamination 5×10-5
Input volume 1-200uL
Repeatability of injection volume 0.1%
Repeatability of results 1.5%
Gas flow control system controlled by MFC mass flow controller, with better than 1% accuracy in the full range.
Adjustment system Fully automatic PC control and adjustment of gas and combustion gas flow and burner position and angle, and automatic optimization, automatic ignition and identification of combustion head type.
Flame safety control With a full set of safety interlock system, a variety of pressure monitoring, automatic safety protection function, acetylene leak detection. Burner type error, flame state, water seal, gas pressure, atomization system pressure, waste liquid bottle liquid level and other abnormalities can automatically extinguish the flame for protection. The gas circuit is equipped with a professional safety canister to ensure that the system shuts down in the normal sequence in the event of an abnormality or power failure.
Power requirements 220V (+10% ~ -10%), 50/60 Hz.
Ambient temperature +10℃～+40℃.
Relative humidity 20～85%.

Applications

Food, medicine, environment, metallurgy, agriculture and disease control