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AF-7550 Double Channel Hydride-Atomic Fuorescence Spectrometer

AF-7550 Dual-Channel Hydride Generation-Atomic Fluorescence Spectrometer is a fully automated spectral analysis instrument suitable for trace detection of twelve elements including As, Sb, Pb, Bi, Te, Sn, Se, Hg, Cd, Zn, Ge, and Au. As the successor to the bestselling AF-7500 atomic fluorescence system, the AF-7550 incorporates automated gas flow regulation, single-point automatic calibration curve generation, and automatic dilution of high-concentration samples. Delivering higher sensitivity, enhanced stability, and more intelligent operation, the instrument offers expanded application capabilities.

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Precision Intelligent Sampling System： Combines a six-port injection valve with a variable sample loop, retaining the accuracy and durability of valve injection while enabling: Automatic single-point calibration (linear correlation coefficient ≥0.999)； Automatic sample dilution with intelligent overloading response: Dilution ratio adaptively determined based on overloading level； Automatic calculation of actual sample concentration Variable sample loop design provides syringe pump-like precision.

Advanced Gas-Liquid Separation Technology: Dual-mechanism drainage: Pump-driven drainage supported by infrared monitoring (Patent: ZL200720104070.7); Ensures complete separation for a truly colorless flame.

 Dual-stage separation process (spatiotemporal + membrane separation) (Patent: 200720104068.x) Infrared liquid level control eliminates analytical interference from level fluctuations; Significantly reduces noise, improves detection limits, widens linear range, and enhances analytical precision.

Eco-Friendly Gas Path Design: Mass flow controller (MFC) module for precise, stable, and continuously adjustable gas flow; Smart gas-saving operation: Automatically activates carrier/shield gas during sampling; Shuts down gas supply 5 minutes after sampling completion;  Balanced efficiency: Reduces gas consumption and operational costs Prevents frequent valve cycling during sequential sampling; Maintains gas flow stability for reproducible results.


Product features

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AF-7550_301.png

Precision Intelligent Sampling System： Combines a six-port injection valve with a variable sample loop, retaining the accuracy and durability of valve injection while enabling: Automatic single-point calibration (linear correlation coefficient ≥0.999)； Automatic sample dilution with intelligent overloading response: Dilution ratio adaptively determined based on overloading level； Automatic calculation of actual sample concentration Variable sample loop design provides syringe pump-like precision.

Advanced Gas-Liquid Separation Technology: Dual-mechanism drainage: Pump-driven drainage supported by infrared monitoring (Patent: ZL200720104070.7); Ensures complete separation for a truly colorless flame.

 Dual-stage separation process (spatiotemporal + membrane separation) (Patent: 200720104068.x) Infrared liquid level control eliminates analytical interference from level fluctuations; Significantly reduces noise, improves detection limits, widens linear range, and enhances analytical precision.

Eco-Friendly Gas Path Design: Mass flow controller (MFC) module for precise, stable, and continuously adjustable gas flow; Smart gas-saving operation: Automatically activates carrier/shield gas during sampling; Shuts down gas supply 5 minutes after sampling completion;  Balanced efficiency: Reduces gas consumption and operational costs Prevents frequent valve cycling during sequential sampling; Maintains gas flow stability for reproducible results.


Applications

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