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Reliable WFX-220 Series Atomic Absorption Spectrometer from China Suppliers and Factory for Superior Performance
Features
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Higher Reliability
- Intelligent feedback detection technology, real-time monitoring of the instantaneous current of the light source, preventing DC lighting, more reliable protection of the hollow cathode lamp.
- Mature technology of aberration eliminated C-T type monochromator, with stable performance.
- Independent modular circuit design, no interference with each other, easier for daily use and maintenance.
- High-reliability gas-liquid separator and fuel gas filter device, providing robustness even in high humid and harsh environments.
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Higher Security
- Modular gas supply management system of flame/graphite furnace atomization system realizes lower failure rate, and further improves safety and reliability.
- High-precision mass flow controller in flame system, with mature and stable circuit system, realizing precise control of gas flow.
- Temperature control protection system together with dual air circuit breakers in GF system, effectively preventing current overload or abnormal temperature rise.
- Multiple safety interlock devices with fully automatic power-off protection and alarm, preventing problems before they happen. Alarm and automatic flame shut down and gas cut-off for ignition failure, fuel gas leakage, abnormal flow in flame system; Alarm and automatic electric protection for abnormal water and gas control, abnormal graphite tube installation and abnormal temperature control in graphite furnace system.
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Easier to Use
- Uniquely designed 8-lamp turret: fully automatic switching, collimation and optimization; "power balance + sequence intelligent adjustment technology" realizing accurate synchronization of the light source signal, easily supporting 1 lamp working, 0–7 lamp preheating at the same time, to meet diversified task requirements.
- Automatically controlled changeover of the integrated flame/graphite furnace atomizer featuring easy operation and time saving eliminates human labor (model A).
- Quick-displacement flame emission burner designed for easily ionized elements such as K, Na, etc., allows you to obtain a linear range of 3 times that of conventional flame methods, effectively reducing dilution steps and narrow linear range problems of similar elements.
- Temperature control modes in graphite furnace analysis can be switched over easily between optical control and constant voltage control, according to different elements and graphite tubes, for the best results and extending the lifetime of graphite tubes.
- Newly developed analysis software with decades of experience, realizing automatic instrument optimization, setting all conditions in one go. Simple and comfortable human-machine dialogue makes newcomers easy to get started. Expert database eliminates the worries of your analysis work.
Specifications
- Wavelength Range: 190–900 nm
- Wavelength Accuracy & Reproducibility: Accuracy: better than ±0.20 nm | Reproducibility: better than 0.06 nm
- Resolution: 0.2 nm ± 0.02 nm
- Baseline Stability (Static): Baseline drift ≤ 0.003 Abs/30 min; Instantaneous noise ≤ 0.0005 Abs
- Baseline Stability (Dynamic): Baseline drift ≤ 0.003 Abs/15 min; Instantaneous noise ≤ 0.003 Abs
Cu Determination by Flame
- Detection Limit: ≤ 0.003 µg/ml
- Sensitivity: ≤ 0.03 µg/mL (1%)
- Precision: ≤ 0.5%
- Linear Correlation Coefficient: ≥ 0.9998
- Linear Range: ≥ 0.65 Abs
Cd Determination by Graphite Furnace
- Detection Limit: ≤ 0.5 pg
- Sensitivity: ≤ 0.6 pg
- Precision: ≤ 2.8%
- Linear Correlation Coefficient: ≥ 0.9994
Background Correction
- D2 lamp background correction capability at 1A is better than 30 times.
- S-H background correction capability at 1.8A is better than 30 times.
Frequently Asked Questions
Q
What wavelength range does this atomic absorption spectrometer cover?
The instrument covers a wavelength range of 190–900 nm, making it suitable for the detection of a wide variety of elements across both UV and visible spectral regions.
Q
How does the 8-lamp turret improve analytical efficiency?
The uniquely designed 8-lamp turret supports fully automatic switching, collimation, and optimization. It allows 1 lamp to work while simultaneously preheating 0–7 lamps, enabling fast multi-element analysis and meeting diversified task requirements without manual intervention.
Q
What safety features are built into the flame and graphite furnace systems?
The instrument features multiple safety interlock devices with fully automatic power-off protection and alarms. These include automatic flame shutdown and gas cut-off for ignition failure or fuel gas leakage, as well as electric protection for abnormal water/gas control and abnormal graphite tube installation.
Q
Can the instrument switch between flame and graphite furnace atomization modes?
Yes. Model A supports automatically controlled changeover of the integrated flame/graphite furnace atomizer, featuring easy operation and significant time savings by eliminating the need for manual labor during mode transitions.
Q
What background correction methods are available, and how effective are they?
Two background correction methods are available: D2 lamp correction (capability better than 30 times at 1A) and S-H (Smith-Hieftje) correction (capability better than 30 times at 1.8A), ensuring accurate results even in complex sample matrices.
Q
Is the analysis software suitable for new users with limited experience?
Absolutely. The newly developed analysis software features automatic instrument optimization and one-step condition setting. Its intuitive human-machine dialogue interface and built-in expert database make it easy for newcomers to get started and perform reliable analyses from day one.