The innovative optical system of the J-1500 allows the measurement of a CD spectrum in the vacuum UV region down to 163 nm. The vacuum UV region below 200 nm, is of critical importance for biomolecules, particularly in protein secondary structure estimation.

High sensitivity combined with a maximum of 10000 nm per minute scan speed allows the J-1500 to measure samples quickly increasing productivity in your lab. An additional benefit is the minimal time exposure of biological samples to the high-energy UV light minimizing the risk of sample degradation.

Stray light will result in distortion of the CD spectrum, particularly in the Far-UV region where the sample absorbance is high. The dual polarizing prism optical design equipped in the J-1000 Series results in stray light lower than 0.0003% enabling them to obtain high quality CD data even under conditions with high absorbance.

The latest Quad Lock-in Amplifier allows the simultaneous acquisition of up to four data channels including CD, Absorbance, Linear Dichroism (LD), Fluorescence, Fluorescence detected CD (FDCD), Fluorescence detected LD (FDLD), Fluorescence Anisotropy and Optional Rotatory Dispersion (ORD). The following figure shows the multi-probe measurement of Lysozyme showing the simultaneous acquisition of CD, Abs, Ex Fluorescence and Em Fluorescence during a thermal ramping experiment.

Designed as a “Chiroptical Spectroscopy Workbench” the J-1500 offers a wide range of accessories to allow it to be adapted to any application requirements. Temperature ramping, protein folding, enzyme kinetics, DNA/RNA interactions, natural organic chemistry, biochemistry, macromolecules and rapid scanning experiments are all possible.

The J-1100 offers the basic cell holders for general CD/LD/Abs and Temperature control measurements.