AA-6200

High-Performance Double-Beam Photometric System

 

Superior Baseline Stability

The double-beam photometric system of the AA-6200 compares the sample beam and reference beam in order to automatically remove any fluctuations in light energy from the light source.
This ensures stable analysis results even during long-term continuous analysis. (See Fig. 3.)

An Optical System Built with Durability in Mind

The optical system of the AA-6200 is completely covered. This design ensures ample durability, even in the acidic atmosphere of a laboratory. Care has been taken to prevent degradation of the mirror and other components, and to minimize energy loss for an extended period, enabling measurements with a good S/N ratio.

New System Improves the S/N Ratio

The double-beam optical system utilizes a chopper mirror, which minimizes loss of light energy from the light source. The S/N ratio is significantly improved in comparison with conventional optical systems utilizing a beam splitter and beam combiner, thus enabling high-sensitivity analysis. A brushless motor is used for the chopper mirror rotation, extending the operating life.

The Deuterium Lamp Method—The Most Sensitive Background Correction Method

The deuterium lamp method, the most sensitive of all background correction methods, is provided as standard. This enables highly sensitive and accurate correction, and can be used with ease in almost any sample analysis.

 

Fig. 1 shows a calibration curve created by measuring a standard Cu solution. A high-sensitivity nebulizer is provided as standard, enabling high-sensitivity analysis. 
 

Fig. 1

Fig. 1

Fig. 2 is the signal profile from the measurement of a 2-ppm standard Cu sample. Low-noise, stable sensitivity is obtained.

Fig. 1

Fig. 2

The data in Fig. 3 shows the change in sensitivity when a standard Cr sample is sprayed continuously for 100 minutes. Each point in the figure shows the average value for 10 measurement cycles. As shown, excellent stability is achieved even over a long period of use. The average CV is 0.5 % max.

Fig. 1

Fig. 3

 

For Research Use Only. Not for use in diagnostic procedures.

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