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LC&耗材&备件-Other HPLC |
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Dionex AD20 Absorbance Detector
This Dionex AD20 Absorbance Detector is in good working condition and tested at GenTech. It is a dual-beam, variable wavelength photometer. Full spectral capability is provided by two light sources: a deuterium lamp for ultraviolet detection and a tungsten lamp for visible wavelength operation. The AD20 features programmable wavelength selection and automatic calibration for precision, reproducibility, and ease-of-use. Includes NINETY (90) DAY WARRANTY.
Specifications
- Optical System: Dual-beam, fiber-optic beamsplitter and concave holographic diffraction grating
- Light Sources: Deuterium lamp (30 W) for ultraviolet spectrum analysis; tungsten lamp (10 W) for visible spectrum analysis
- Wavelength Range: 190 to 800 nm variable; continuous in 1 nm steps
- Wavelength Accuracy: ± 1 nm
- Bandwidth: 8 nm
- Absorbance Range: Discrete settings of 0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, and 2.0 AU
- Autozero Capability: 2 AU
- Autozero Accuracy: ± 100 uAU
- Noise: < 10 uAU peak-to-peak at 254 nm, 2-second rise time, flowing deionized water
- Drift: < 100 uAU/hour (after warm-up) < 100 uAU/ºC (after warm-up)
- Filter Rise Time: Discrete settings of 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, or 10.0 seconds
- Analog Output Range: Discrete settings of 0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, and 2.0 AUFS
- Cell Body: PEEK
- Volume and Optical Path Length: Standard bore cell, used with 4 mm (0.016 in) columns: 9 mL volume, 10 mm (0.002 in) optical path length
- Maximum Operating Pressure: 1.38 mPa (200 psi) with a heat exchanger; 3.45 mPa (500 psi) without a heat exchanger
- Chemical Compatibility: The use of a base stronger than 0.1 M is not recommended, as it will etch the silica windows.
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