Used Lab Equipment

Features:

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. 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. 

Common Applications include: Agricultural, Environmental, Petrochemical, Clinical.

â—† Easy-to-use automation software 

â—† Integrated safety precautions for user protection

â—† Precision accuracy with integrated correction system 

â—† Life cycle value, best choice for less than 8 elements of analysis

Specifications:

• Wavelength range: 190-900 nm

• Light source: Hollow cathode lamp (HCL), Deuterium Arc lamp (D2)

• Modulation: Square wave pulse

• Modulation frequency :

  100 Hz self reversal (SR) background,

  400 Hz Deuterium Arc (D2) background

• Monochromator

• Grating: 1800 grooves/mm diffraction grating

• Blazed wavelength: 250 nm

• Focus: 300 nm

• Bandwidth: 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm

• Scan mode: Automatic

• Photometric type: Single beam

• Wavelength accuracy: ±0.15 nm

• Wavelength resolution: 0.2 nm±0.02 nm

• Wavelength reproducibility: <0.05 nm

• Spectral bandwidth: 0.5, 1.0, 2.0, 5.0 nm

• Baseline stability: 0.005 A/30 min

• Background correction:
  Deuterium Arc (D2) 1.0 Abs,

  Self Reversal (SR) 3.0 Abs

   

  Flame Analysis

• Flame type: Air/acetylene

• Sensitivity (Cu): 2 μg/ml Absorption>0.280 Abs

• Characteristic Concentration: Cu<0.02 μg/ml

• Detection limit: Cu<0.004 μg/ml
  Repeatability: Cu<0.7 %

• Burner head: Titanium Alloy

   

• Nebulizer:
  High–efficiency glass,

  acid proof available as an option

  Pre-mix chamber: Corrosion resistant

• Atomizer selection:

  Manual (AA990F)
  Automatic changeover (AA990FG)

• Safety features: Burner switch, flame sensor, gas leak sensor, low gas pressure sensor, drain trap sensor, power loss protection

  
  Graphite Furnace Analysis

• Graphite head: Transversally heated

• Temperature range: Ambient-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