Introduction:
Circular Dichroism (CD) is a critical analytical technique
that is used to analyze chirality in molecules based on their optical activity.
This method measures the difference in the absorption of left and right
circularly polarized light in optically active substances.
The J-1500 Series Circular Dichroism spectrophotometers are
specifically designed for high-sensitivity measurements in the UV/Visible/NIR
regions. These instruments are crucial for laboratory research in areas
including biology, chemistry, materials science, and medicine, among others, to
characterize the structural characteristics of chiral molecules.
With its advanced capabilities, the J-1500 Series Circular
Dichroism spectrophotometers are widely used in protein conformational studies,
protein folding studies, DNA/RNA interactions, enzyme kinetics, formulation
studies, purity testing of optically active substances, quantitative analysis
of pharmaceuticals, natural products chemistry, and much more.
At our laboratory, we utilize the J-1500 Series Circular
Dichroism spectrophotometers to conduct cutting-edge research in various
fields. We believe that these instruments are essential for any researcher
working in the areas of life sciences and material sciences.
Specifications:
Light source: 150 W air-cooled Xenon lamp
Detector: Head-on photomultiplier tube PMT/InGaAs
Modulator: Photoelastic modulator
Measurement wavelength range:
- 163 to 950 nm (PMTdetector)
- 800 to 1600 nm (InGaAs detector)
Spectral bandwidth: 0.01 to 16 nm
Slit width: 1 to 4000 µm
Digital Integration Time (D.I.T.): 0.1 msec to 30 sec.
Scanning mode: Continuous scan /Step scan/Auto response(D.I.T) scan
Scanning speed: up to 10000 nm/min
Photometric Mode: CD, LD, Absorbance, HT voltage, etc.
CD resolution: 0.00001 mdeg
RMS noise:
- 0.004 mdeg (185 nm, 150 W light source)
- 0.003 mdeg (185 nm, 450 W light source)
- 0.007 mdeg (200 nm, 150/450 W light source)
- 0.007 mdeg (500 nm, 150/450 W light source)
Baseline stability: 0.02 mdeg/hr
LD measurement: Full scale 1ΔOD, Resolution 0.000001ΔOD
Photometric range: 0 to 5 Abs
External input terminal: Two channels
Mercury lamp: Used for the instrument inspection
Shutter: Located the light source unit
Sample chamber: 150 mm wide 310 mm deep 165 mm high; Exists the water inlet/outlet ports
Nitrogen gas purging: Atmosphere in the light source unit, monochromator unit, and sample chamber can be purged using dry nitrogen gas. 2L/Min (more than 185nm)
Dimensions: 1055 mm wide 545 mm deep 390 mm high (150 W light source)
Consumables:
- Rectangular quartz cell with teflon cap pathlength:
