TOPAZ Dual UV Detector
Two wavelength in one cell 200 up to 320 nm
- Description
- Parameters
TOPAZ Dual UV Detector
is a new type of UV detector, which allows measuring absorbance of two wavelengths simultaneously in one cell. This unit is used in liquid chromatography to verify analyzed samples by means of a second wavelength or in situations when some peaks absorb on different wavelengths. It is possible to use the detector in analytical, preparative or flash applications by using different cells. Noise level at 254 nm is ± 1 x 10-4 AU with an empty cell.
The unit’s DAD (diode array detector) design offers many advantages:
- A wavelength setting may be changed in steps of 1nm
- The unit is easy for operating, reference and sample signal are available for detector diagnostics
- Output signal is it available in digital and analogue form on the output connector
- Work hours of lamp are counted using build in counter.
- Detector cell is easy replaceable from the side of the detector
Important notice: Output signal of the detector is directly proportional to the optical path of the cell. Since the optical paths of cells may be changed, noise and drift levels are referred to the optical path of 10 mm, corresponding to the AU definition.
Used cells
Preparative cell PLCC 14 (supplied with unit)
| volume/optical path(adjustable) | 45 µl / 0.1 mm, 55 µl / 1.4 mm, 70 µl / 2.4 mm |
| connecting | tubing with OD = 1/16" and 1/8", thread 1“-28 |
Analytical cell HPLC 08 (optionally)
| Volume / optical path | 10 µl / 5 mm |
| Diameters of capillaries OD x ID | input 1/16" x 0,2 mm; output 1/16" x 0,5 mm |
| Accuracy of adjustment | ± 1 nm |
|---|---|
| Typical spectral half-width | 8 nm |
| Reproducibility | ± 0.5 nm |
| Light source | Deuterium discharge lamp |
| Output for integrator | 1 V/AU |
| Time constant (T90) | 1 s |
| Communication | RS232 |
| Power supply | 230 V ± 10%, 50 Hz , 115/100 V± 10%, 50-60 Hz |
| Power input | 75 VA |
| Dimensions W x H x D | 220 x 178 x 435 mm |
| Weight | 12 kg |
| Noise level at empty cell (254 nm, TC 1 s) | ± 1 x 10-4 AU |
| Drift at empty cell (254 nm after 1 h) | 5 x 10-4 AU/hr |
| Materials in contact with mobile phase | PTFE; fused silica, stainless steel, Vespel, PEEK |
ECOM is a global supplier of scientific and laboratory instruments for liquid chromatography. The company was established in October 1991 and it is focused on research, development, and manufacturing of scientific and laboratory equipment for liquid chromatography. Our innovative R&D and dynamic processes allow us to quickly react on customer’s needs and to propose customised products and solutions. ECOM’s focus on high quality products and responsive service supports high performance of its customers.
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