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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Berthold Technologies GmbH & Co. KG
- Microvolume Spectrophotometer
- 190 to 1,000 nm
- 2048 element CMOS
- Inquire
DeNovix Inc.
- UV-Vis Spectrometer, Fluorometer
- 190-840 nm
- Inquire
- 1.5 nm (FWHM at Hg 253.7 nm)
Agilent Technologies
- UV-Vis double beam spectrophotometer
- 190 to 1100 nm
- Double out-of-plane Littrow monochromator
- 0.1 nm limiting resolution
Agilent Technologies
- UV-Vis double beam spectrophotometer
- 190 to 1100 nm
- Double out-of-plane Littrow monochromator
- 0.1 nm limiting resolution
Agilent Technologies
- UV-Vis double beam spectrophotometer
- 190 to 1100 nm
- Double out-of-plane Littrow monochromator
- 0.1 nm limiting resolution
Agilent Technologies
- UV-Vis
- 175 to 900 nm
- Double Beam
- Inquire
Agilent Technologies
- UV-VIS-NIR
- 175 to 3300 nm
- Double Beam
- Inquire
Agilent Technologies
- UV-Visible
- 190 to 1100 nm
- Double beam
Agilent Technologies
- UV-VIS-NIR
- 175 to 1800 nm
- Double out-of-plane Littrow monochromator
- UV/Vis less than 0.05; NIR less than 0.1
Agilent Technologies
- Benchtop FTIR spectrometer
- ≤2 cm-1
Agilent Technologies
- Universal measurement spectrophotometer
- 175 to 3300 nm
- Double out-of-plane Littrow monochromator
- Inquire
Agilent Technologies
- Fluorescence spectrophotometer
- 200–900 nm
- Czerny-Turner monochromator
DeNovix Inc.
- Single beam, UV/Vis
- 190-840 nm
- Inquire
- 1.5 nm (FWHM at Hg 253.7 nm)
DeNovix Inc.
- Fluorometer
- Inquire
- Inquire
- Inquire
Edinburgh Instruments Ltd
- UV-Vis
- 190 to 1100 nm
- Czerny-Turner, Dual Beam Monochromator
- Inquire
Edinburgh Instruments Ltd
- Fourier Transform Infrared (FTIR)
- 8000 to 350 cm -1
- Inquire
- 0.5 cm-1, 1 cm-1, 2 cm-1, 4 cm-1, 8 cm-1, 16 cm-1, 32 cm-1
Edinburgh Instruments Ltd
- Inquire
- Inquire
- Inquire
- Inquire
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
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