Circular Dichroism

Circular Dichroism Spectrophotometers

J-1000 Series

A circular dichroism spectrometer for exploring the structure and stability of small and biological chiral molecules.

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J-1500 Circular Dichroism Spectrophotometer
J-1500 Circular Dichroism Spectrophotometer

The J-1000 Series of Circular Dichroism spectrophotometers are specifically designed for high sensitivity measurements in the near- and far-UV regions, for scientists that need confidence in the data from characterization studies of biomolecule structure, function, and stability under a wide variety of experimental conditions.

Unlike some detectors which only provide good signal-to-noise for low-absorbing materials, the J-1000 Series circular dichroism spectrophotometers use high dynamic range detectors to obtain high-quality spectra of samples with excellent signal-to-noise, especially for highly absorbing materials found in the far-UV.

Features of the J-1000 Series

  • High optical throughput
  • Double prism monochromator providing low stray light
  • Wide dynamic range PMT detector
  • Highly efficient nitrogen purge system
  • Digital signal processing
  • Simultaneous Multi-Probe: CD, LD, HT, DC, absorbance, fluorescence

Benefits and Accessories

Wide Range of Applications

  • Protein conformational studies
  • Evaluation of secondary and tertiary structure
  • Quantitative analysis of pharmaceuticals
  • Formulation studies
  • Protein folding studies
  • DNA/RNA interactions
  • Enzyme kinetics
  • Purity testing of optically active substances
  • Natural products chemistry

J-1000 Series Models

  • The basic, compact model for research, QA/QC, and teaching applications.


  • Highest performance with a wide range of accessories for maximum flexibility to meet complex research demands.


  • UV/Visible/NIR measurements up to 2,500 nm for MCD and specialized applications.


  • Automated high-throughput screening system for use with the J-1500/1700.

    High-Throughput CD