atomic absorption spectrometer price
atomic absorption spectrometer price

AA-7090 Atomic Absorption Spectrometer(Zeeman background correction)

AAS graphite furnace features a unique design with transverse heating, longitudinal Zeeman background correction and variable magnetic field intensity.
190 – 900nm
Wavelength Range
0.1, 0.2, 0.4, 1.0 ,2.0nm
Bandwidth
±0.1nm
Wavelength Accuracy
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Product Details
AAS Zeeman background correction is suitable for high precision analysis of samples with complex interference matrices.

Variable magnetic field intensity allows the operator to optimize field strength for each element, maximizing the Zeeman effect for accurate results every time.
Characteristics
Transverse graphite furnace heating technology improves sample atomization efficiency and uniformity.
Two background correction methods are available: longitudinal Zeeman effect correction and deuterium lamp correction. The operator can select the most suitable mode based on the sample.
Unique adjustable magnetic field strength (0.6 - 1.1 Tesla, in 0.1 Tesla increments) allows for element specific optimization to achieve high sensitivity and precision.
8-lamp automated lamp turret with auto-alignment for quick element switching and lamp position optimization.
Code lamp recognition technology, compatible with both hollow cathode lamps and super lamps.
High efficiency super lamp power supply, newly designed for higher sensitivity while consuming less power and generating less heat.
Parameter
Model:AA-7090
Optical System
Wavelength range 190-900nm
Spectral bandwidth 0.1, 0.2, 0.4, 1.0 and 2.0 nm, automatic switch
Mono-chromator Czerny-Turner Grating Mono-chromator
Wavelength Accuracy / Indication Error ±0.1 nm
Wavelength Repeatability  ≤ 0.05 nm
Grating 1800 lines/mm
Blaze wavelength 250 nm
Baseline stability Static baseline stability ≤ 0.002 A / 30 min, dynamic baseline stability ≤ 0.003 A / 30 min
Resolution Better than 0.1nm
Flame Method
Characteristic Concentration of Cd ≤ 0.5×10-12 g
Detection Limit ≤ 1×10-12 g RSD ≤ 3.0%
Temperature Control Max 20 step temperature program. 3 modes of temperature rise: step, slope and flat.
Heating Mode Power heating
Heating Rate ≥ 2500 / s
Flame System
Characteristic Concentration of Cu ≤ 0.02 µg / mL / 1%
Detection Limit ≤ 0.003 µg / ml RSD ≤ 0.45%
Burner Head Switchable 50 mm and 100 mm titanium burner head, titanium nebulizer and high performance glass nebulizer
Position Control Optimization of height and angle, flame and hydride switch within one min
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