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AF-7550 Double Channel Hydride-Atomic Fluorescence Photometer

The latest AF-7550 dual-channel hydride - atomic fluorescence spectrometer launched by Dongxi Analysis is a fully automatic spectral analysis instrument, suitable for trace analysis of eleven elements including As, Sb, Pb, Bi, Te, Sn, Se, Hg, Cd, Zn and Ge. As the successor to the best-selling atomic fluorescence product AF-7500 of East-West Analysis, the AF-7550 realizes functions such as automatic adjustment of gas flow rate, single-point automatic preparation of working curves, and automatic dilution of high-concentration samples. It features higher sensitivity, better stability, more intelligent operation and a wider range of applications.

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AF-7550_301.png AF-7550 Double Channel Hydride-Atomic Fluorescence Photometer

Accurate and intelligent injection method design, the combination of six-way injection valve and variable dosing tube, not only retains the advantages of six-way injection, accurate injection of sample valve, convenient and durable, but also realizes a single-point automatic preparation of standard curve (linear correlation coefficient greater than or equal to 0.999), automatic sample dilution function. After the sample concentration is overloaded, the instrument automatically determines the dilution multiple according to the degree of overload, and can automatically calculate the actual concentration of the sample. Unique variable dosing tube design, with the advantages of injection pump;

The gas-liquid separation system with more complete separation is mainly based on pump discharge, supplemented by infrared control (patent number: ZL200720104070.7), which makes the gas-liquid separation more complete and realizes a true colorless flame.

The gas-liquid separation system uses secondary separation (primary space-time separation, primary membrane separation) (patent number: 200720104068), and at the same time uses infrared sensors to control the liquid level, eliminating the influence of the liquid level on the analysis. The noise level is greatly reduced, the detection limit is greatly improved, and the linear range is widened to improve the analysis accuracy;

The gas flow control is precise and accurate, and the flow rate can be continuously adjusted, with good consistency, stability and reliability. Automatically turn on the carrier gas and shield gas when sampling, and turn off the carrier gas and shield gas 5 minutes after the end of sampling. It not only ensures the saving of gas and reduces the cost of analysis, but also avoids the repeated switch of the flowmeter when repeated sampling in a short period of time to ensure the stability of the gas flow.

Key Features

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AF-7550_301.png AF-7550 Double Channel Hydride-Atomic Fluorescence Photometer

Accurate and intelligent injection method design, the combination of six-way injection valve and variable dosing tube, not only retains the advantages of six-way injection, accurate injection of sample valve, convenient and durable, but also realizes a single-point automatic preparation of standard curve (linear correlation coefficient greater than or equal to 0.999), automatic sample dilution function. After the sample concentration is overloaded, the instrument automatically determines the dilution multiple according to the degree of overload, and can automatically calculate the actual concentration of the sample. Unique variable dosing tube design, with the advantages of injection pump;

The gas-liquid separation system with more complete separation is mainly based on pump discharge, supplemented by infrared control (patent number: ZL200720104070.7), which makes the gas-liquid separation more complete and realizes a true colorless flame.

The gas-liquid separation system uses secondary separation (primary space-time separation, primary membrane separation) (patent number: 200720104068), and at the same time uses infrared sensors to control the liquid level, eliminating the influence of the liquid level on the analysis. The noise level is greatly reduced, the detection limit is greatly improved, and the linear range is widened to improve the analysis accuracy;

The gas flow control is precise and accurate, and the flow rate can be continuously adjusted, with good consistency, stability and reliability. Automatically turn on the carrier gas and shield gas when sampling, and turn off the carrier gas and shield gas 5 minutes after the end of sampling. It not only ensures the saving of gas and reduces the cost of analysis, but also avoids the repeated switch of the flowmeter when repeated sampling in a short period of time to ensure the stability of the gas flow.

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