Description
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.
◆ Easy-to-use automation software
◆ Integrated safety precautions for user protection
◆ Precision accuracy with integrated correction system
◆ Life cycle value, best choice for less than 8 elements of analysis
Specifications:
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Wavelength range: 190-900 nm
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Light source: Hollow cathode lamp (HCL), Deuterium Arc lamp (D2)
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Modulation: Square wave pulse
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Modulation frequency :
100 Hz self reversal (SR) background,
400 Hz Deuterium Arc (D2) background
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Monochromator
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Grating: 1800 grooves/mm diffraction grating
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Blazed wavelength: 250 nm
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Focus: 300 nm
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Bandwidth: 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm
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Scan mode: Automatic
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Photometric type: Single beam
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Wavelength accuracy: ±0.15 nm
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Wavelength resolution: 0.2 nm±0.02 nm
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Wavelength reproducibility: <0.05 nm
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Spectral bandwidth: 0.5, 1.0, 2.0, 5.0 nm
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Baseline stability: 0.005 A/30 min
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Background correction:
Deuterium Arc (D2) 1.0 Abs,Self Reversal (SR) 3.0 Abs
Flame Analysis
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Flame type: Air/acetylene
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Sensitivity (Cu): 2 μg/ml Absorption>0.280 Abs
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Characteristic Concentration: Cu<0.02 μg/ml
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Detection limit: Cu<0.004 μg/ml
Repeatability: Cu<0.7 % -
Burner head: Titanium Alloy
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Nebulizer:
High–efficiency glass,acid proof available as an option
Pre-mix chamber: Corrosion resistant
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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
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Graphite head: Transversally heated
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Temperature range: Ambient-2650 ℃
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Heating program: Up to 10 steps. Drying, Ashing, Atomization, Cleaning
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Feedback: Voltage and optical temperature control feedback
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Sensitivity (Cu): 50 ng/m Absorption>0.40 Abs
