The A3 Atomic Absorption Spectrometer is a high performance automated instrument designed to meet the requirements of the modern laboratory. Due to its versatility and performance it can be used for a wide range of applications.
Three flame options are available to the user with the Air/Acetylene being the standard configuration. This flame can be used for nearly all standard elements while the N2O/Acetylene and the Air/LPG (natural gas) are available as an option for the more demanding of elements. All three flame configurations offer coded burner for full safety protection.
The graphite head is fixed into the optical path to maximize performance and eliminate drift. The temperature of the transversely heated graphite tube is accurately controlled by means of a precision feedback system. Pyrolytically coated platform tubes are supplied as standard to improve the performance and eliminate many analytical problems associated with this technique.
The flame and graphite furnace can be changed over by a simple selection in versatile AA Win Pro software.

Key Features

• Easy to use, complete software control
• Integrated safety precautions for user protection
• Flexible configuration for a wide array of industrial apps
• Time-saving high speed analysis

Technical Specifications

Model:Flame AA System-A3F, Graphite AA System-A3G,  Combined Flame and Graphite Furnace AA System-A3FG
Spectrometer System
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
Stray light	≤0.12 %T (220 nm NaI, 340 nm NaNO2)
Background correction	Deuterium Arc (D2) 1.0 Abs, Self Reversal (SR) 3.0 Abs
Flame Analysis
Flame types	Air/Acetylene, Nitrous Oxide/Acetylene, Air/Propane (LPG)
Sensitivity (Cu)	2 μg/ml Absorption >0.280 Abs
Characteristic concentration	Cu<0.02 μg/ml, Ba<0.15 μg/ml (N2O/Acetylene)
Detection limit	Cu<0.004 μg/ml
Repeatability	Cu<0.7 % (Air/Acetylene Flame)     Ba<1.0 % (Nitrous Oxide/Acetylene Flame)
Burner heads	Titanium alloy
Nebulizer	High efficiency glass, Acid proof available as an option
Pre-mix chamber	Corrosion resistant
Atomizer selection	Manual (A3F)     Automatic changeover (A3FG)
Safety features	Burner identification, 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
Detection limit	Cd<0.004 ng/ml
Repeatability	Cu<2.0 %, Cd<2.0 %
Graphite tubes	Pyrolytically coated with platform
Sample size	Up to 20μl
Graphite cooling	Water circulator available
Safety features	Burner Identification, Flame Sensor, Gas leak Sensor, Low Gas Pressure Sensor, Drain Trap Sensor, Power Loss Protection, Circulation Water (graphite), Over Temperature Sensor (graphite)
Data Processing
Operating program	AA Win Pro software
Analytical methods	Flame AA, Flame AE, Graphite Furnace, Hydride Generation
Readout Mode	Continuous, manual, peak height, peak area
calibrations	Multi-standard calibration, standard addition, interpolation
Data storage	Analytical results, instrument and measurement parameters, signal profile, calibration curve
Power Requirements
Main unit	220 VAC 50/60 Hz 200 W
Graphite power supply	380VAC 50/60Hz, instantaneous power 5 kW current rating 7 kW
Dimensions
Main unit	44 x 21 x 21 in 165 lb
Graphite power supply	20 x 21 x 21 in 154 lb

A3 AAS Atomic Absorbtions Spectrometer-Brochure