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The instrument, in its standard configuration, uses a 150W air-cooled lamp. The J-1500 CD spectrometer, with its extensive expandability, can be of great interest for research laboratories engaged in chiroptical spectroscopy. instrument size: 740 x 545 x 325 mm (WxDxH) 70 kg.sample compartment size: 105 x 150 x 110 mm (WxDxH).built-in nitrogen purge for light source, monochromator unit and sample compartment.data channels: 4 simultan CD/LD/UV signal processing, 2 external input channels.photometric range: 0 – 5 Abs, accuracy 0.01 Abs.stray light: less than 0.0003% at 200 nm.RMS noise (bandwidth 1 nm, digital integration time 8 sec): 0.03 mdeg (200-500 nm).spectra measurement mode: continuous scan, step scan, auto scan.The sample of a small quantity can be measured with the Micro-Sampling Disk accessory, which is able to determine the circular dichroism characteristics of even 2 μl samples. The Peltier-type cuvette holder, also capable of transmission measurements, can be used to examine the temperature dependence of the sample structure. In its cell compartment cylindrical and rectangular cuvettes of maximum 20 mm length can be placed. The J-1100 CD spectrometer uses an air-cooled lamp of 150 W as a light source and the standard measurement range is between 180-600 nm. The instruments are connected to the computer via a USB port, while the control and the collection of the measured data is done by the Spectra Manager II software package, also controlling all the JASCO spectroscopic instruments. A built-in mercury lamp within the J-1000 is available for the simpler, faster and well-documented control of the wavelength accuracy. Also, the protection of the optics and the feasibility of the measurements in the UV range is facilitated by the restructured, efficient and low-consumption nitrogen purge system. Therefore, in the case of prolonged measurements both the sample and the optical elements can be protected from the continuous high-energy radiations.
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In the optical system of the instruments a shutter has been transferred to a new position. With the help of the automatic accessory recognition system, the specific measuring parameters belonging to the sample holders can be easily configured by the control software.
Both instruments, in their basic configuration, can be used for the examination of the circular (CD) and linear (LD) dichroism phenomena, as well as a single-beam spectrophotometer. The J-1500 can be beneficial for those who are involved in research, because of its extensive expandability options. The J-1100 compact instrument is recommended primarily for those who wish to use it to characterize bio and organic molecules as a routine task. The J-1100 and J-1500 instruments are considered as the successors of the JASCO J-815 CD spectrometers. With these instruments the kinetics of enzyme and organic reactions, the DNA/RNA interactions, the structure and conformation of proteins can also be examined. It can be used for monitoring the stereoselective processes and for studying the conformational changes caused by temperature, pH and chemical reactions. The CD spectrometers are the basic instruments for measuring the absolute configuration and conformation of the organic compounds. This instrument, also known as dichrograph, spectropolarimeter, circular dichroism spectrometer (CD) or electronic circular dichroism spectrometer (ECD) is capable of both the qualitative and quantitative testing of compounds in whose molecules chromophore groups can be found near the chiralty centers. The Japanese company JASCO has been collecting its experience in the field of CD spectrometers, the most important chiroptical instruments used for the measurement of circular dichroism phenomenon since 1961. Surface plasmon resonance (SPR) instruments.Vision Microette – diffusion cell systems.Hanson Sample Preparation Extractor (XTRX500).DissoClean Mark1 dissolution vessel washer.Hanson On-line UV-Vis dissolution systems.JASCO LC-4000 HPLC / RHPLC / UHPLC systems.NRS-5000/7000 dispersive Raman spectrometers.