Spectrophotometer simpler to use an higher in dependability thanks to mounting of a large-size color LCD.
High resolution satisfying European Pharmacopoeia (spectral bandpass: 1.5nm).
Trace-amount measurement in biotechnological field, etc. can be carried out using optional 50, 25 and 5micro cells.
Features :
Stable optics due to double beam
In double beam design, the energy of the light source is divided into two with a half mirror so that one passes through the reference side, and the other through the sample side, which is unavailable with the single beam design.
Since the reference-side energy is also incident on a detector, photometry is carried out on the basis of this signal. Therefore, an energy change in the light source can be compensated to ensure stable measurement for a long time.
The optics of this instrument adopts the Seya-Namioka monochromator widespread as a representative concavediffraction grating monochromator.
Because a concave diffraction grating has both beam condensing and dispersing functions, an optical system canbe configured with fewer mirrors. In a spectrophotometer, use of fewer mirrors signifies a shorter optical path,thus giving rise to an aberration-free bright optics.
For elimination of the aberrations which were essentially unavoidable in the past, a stigmatic concave diffractiongrating has been developed by applying Hitachi’s original technology. As a result, a higher resolution has beenrealized.
A higher resolution has been achieved by eliminating coma from the Seya- Namioka monochromator which is the most popular concave diffraction grating monochromator. Its grooving is supported by the only ruling engine in Japan. The diffraction gratings of Model U-2900/2910 have also been made with this machine.
Spectral bandpass 1.5nm satisfying European Pharmacopoeia
European Pharmacopoeia requires a ratio of 1.5 or larger when measuring 0.02% (V/V) solutions of toluene in hexane.
In the spectrum at right, a satisfactory value of 1.6 can be confirmed.
(Sample: 0.02% solution of toluene in n-hexane)
Personal computer-based instrument control and data processing.
U-2900 can be controlled by a PC equipped with optional UV Solutions Program(P/N 2J1-0310).
UV Solutions Program provides not only basic functions such as photometry quantitative analysis and wavelength scan but also the capability of data handling as described below.
(U-2910 is the model exclusively for operation with a PC.
A PC equipped with Windows(R) XP is required for UV Solutions Program.)
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