Spectrophotometers are used to measure the concentration of a known substance in a solution. They do this by passing a light through the substance and measuring light intensity as a function of wavelength. Either single beam or double beam spectrophotometers can be purchased. In a single beam spectrophotometer, a reference standard is used to measure light intensity before and after the sample is loaded. For double beam spectrophotometers the beam is split with one beam passing through the standard and the other through the sample to compare intensities. While single beam spectrophotometers are typically less expensive and have higher sensitivity, double beam spectrophotometers tend to be more stable and easier to use. Spectrophotometers are important pieces of equipment in chemistry, physics, biochemistry, clinical, and materials testing labs.
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JASCO
- Circularly Polarized Luminescence
- 250 to 850 nm (Optional: 400 to 1,100 nm with PMT detector)
- Double prism monochromators for both excitation and emission optics / Piezoelastic modulator / Lock-in amplifier
- Wavelength Resolution: 0.025 nm
CPL Resolution: 0.00001 mdeg
JASCO
- Circular Dichroism
- 3,200 to 850 cm-1 (Optional: 4,000 to 750 cm-1)
- 28° Michelson interferometer, with gold coated corner-cube mirrors. mechanical bearing, temperature stabilized / KRS-5 Polarizer /
- 0.5 to 16 cm-1
JASCO
- Circular Dichroism
- 180 to 600 nm
- Double-prism polarizing monochromator / J-1700: Double-prism polarizing monochromator and grating monochromator
- Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg
JASCO
- Circular Dichroism
- J-1500: 163 to 950 nm (Option: 163 to 1600 nm)
- Double-prism polarizing monochromator / J-1700: Double-prism polarizing monochromator and grating monochromator
- Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg
JASCO
- Circular Dichroism
- 163 to 2500 nm (Option: 163 to 950 nm (PMT) / Option: 900 to 2500 nm (InGaAs)
- Double-prism polarizing monochromator and grating monochromator
- Wavelength Resolution: 0.025 nm / CD Resolution: 0.00001 mdeg
JASCO
- UV-Visible
- 190 to 1,100 nm
- Rowland off-circle arrangement
Single monochromator
Double beam type - =BS8
JASCO
- UV-Visible
- 190 to 900 nm
- Czerny-Turner mount
Double monochromator
Fully symmetrical double beam type - =BS9
JASCO
- UV-Visible
- 187 to 900 nm
- Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type - =BS10
JASCO
- UV-Visible/NIR
- 190 to 2,700 nm (3,200 nm, option)
- Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type - =BS11
JASCO
- UV-Visible/NIR
- 190 to 1,600 nm
- Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type - =BS12
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