Benchtop Raman spectrometers: Cora 7X00
The high-performance Raman analyzers for research and industry
The Cora 7X00 series of benchtop Raman spectrometers has been developed for use in academic and industrial research. It provides high spectral resolution, a wavelength of 3 cm-1 to 4 cm-1 up to 15 cm-1, a low noise level, and a high sensitivity in a space-saving 19-inch housing, which makes it easy to fit these Raman analyzers into your laboratory.
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Key Features
Specialized Raman measurements – The right wavelength
The Cora 7X00 Raman spectrometers allow you to choose the optimal wavelength for the samples in question to ensure optimal material identification of your non-fluorescent and fluorescent samples: 532 nm, 785 nm, or 1064 nm. The shorter the wavelength, the stronger the Raman signal. In many colored substances and uncolored organic compounds, fluorescence superimposes the Raman signal. In this case, a lower wavelength often provides a better Raman signal.
Flexible use – Raman spectroscopy with fiber probe
With the fiber probe, a Cora 7X00 benchtop Raman spectrometer can be easily attached to experimental setups. This allows the easy acquisition of data from a number of experiments without having to change the spectrometer setup. If there is a lack of space, the spectrometer can be stored under the table. The vial holders are easily attached to the fiber probe and enable Raman measurements of liquids and powders in vials.
Real spectra – Access to raw data
In R&D it is important to have unprocessed raw data so that different users can perform separate analyses of their results. Cora 7X00 spectrometers give you this access. Correction of baseline or background, and the smoothing of a spectrum can be activated or deactivated by a single mouse-click and allow for easy Raman spectroscopy.
Quick measurement on low-concentration substances
Do you want to analyze samples with a low-scattering cross-section or low concentrations and do not want to wait for data for minutes or hours? The transmission gratings, especially made for Cora 7X00, offer maximum throughput of light and achieve the best possible sensitivity. Thus, a 0.01 M aqueous solution of ammonium persulfate already generates a clearly identifiable signal at 532 nm after 8 s integration time. Using a benzonitrile sample, this is achieved at 10 ms acquisition time and a signal strength of 300 counts.
High signal, low noise – Cooled detectors
For the analysis of low-scattering samples or the measurement of low-concentrated samples, a high signal-to-noise ratio is needed. This is why all Cora 7X00 benchtop Raman spectrometers are equipped with cooled detectors. Depending on the wavelength, CCD chips (532 nm and 785 nm) or InGaAs arrays (1064 nm) are used. Raman instruments with 785 nm excitation wavelength (Cora 7200) are optionally available with deep-cooled detectors; the 1064 nm instrument (Cora 7300) comes with a deep-cooled detector as standard. Thus, a benzonitrile sample can be measured with a 785 nm laser and 450 mW laser power in 10 ms measuring time.
Technical Specifications
| Single-wavelength | ||||
| Cora 7100 | Cora 7200 | Cora 7200 Deep Cooled | Cora 7300 Deep Cooled | |
| Optical | ||||
| Excitation wavelength | 532 nm | 785 nm | 785 nm | 1064 nm |
| Spectral range | 100 cm-1 to 3200 cm-1 | 100 cm-1 to 3200 cm-1 | 100 cm-1 to 2000 cm-1 | 200 cm-1 to 1800 cm-1 |
| Resolution (FWHM) | 4 cm-1 to 5 cm-1 | 4 cm-1 to 5 cm-1 | 3 cm-1 to 4 cm-1 | 10 cm-1 to 15 cm-1 |
| Laser power | 50 mW | 0 mW to 450 mW (adjustable) | 0 mW to 450 mW (adjustable) | 0 mW to 450 mW (adjustable) |
| Spectrograph | f/2 Transmission Volume Phase Grating | |||
| Integration time | 5 ms to 600 s | 5 ms to 600 s | 5 ms to 900 s | 1 ms to 30 s |
| Wavelength calibration | Automatic via software | |||
| Detector array | 2048 px x 64 px CCD | 2048 px x 64 px CCD | 2048 px x 64 px CCD | 512 px InGaAs |
| Detector cooling | approx. -5 °C | approx. -5 °C | approx.-55 °C | approx.-55 °C |
| Physical | ||||
| Dimensions (DxWxH) | 411 mm x 426 mm x 151 mm (16 in x 17 in x 6 in) | |||
| Weight | ~ 13 kg (28.6 lb) | ~ 15 kg (33 lb) | ||
| Operating ranges | 0 °C to 40 °C; 0 % RH to 80 % RH | |||
| Electrical | ||||
| A/D converter | 16 bit | |||
| Power consumption | <25 W | <75 W | ||
| Battery (optional) | n/a | |||
| Power input | 110 / 230 V AC | |||
| Sampling options | ||||
| Cora 7X00: Fiber-optic Raman probes | ||||
| Fiber-optic probe | Coaxial, AR-coated, filtered | |||
| Fiber-optic trigger probe | n/a | |||
| Probe vial holder set | Insert for vials, tubes, cuvettes for use on fiber-optic probe | |||
| Computer | ||||
| Operating system | Windows-based (32-bit or 64-bit) | |||
| System control | External PC | |||
| GUI | Cora 7000 Software (PC) | |||
| Data ports | USB 2.0 | |||
| Security | Tiered password structure (3 levels), event logging, and reporting | |||
| Internal storage | n/a | |||
| Wireless connectivity | n/a | |||
| Spectral libraries | Factory library; user-defined; 3rd party options | |||
| Software development kit (optional) | DLL and sample code for C/C++ | |||
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