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++

Documents

Boosting the Signal with Surface-Enhanced Raman Scattering (SERS) Application Reports en
Combining Rheology and Raman Spectroscopy Shear Rate Effects Application Reports en
Combining Rheology and Raman Spectroscopy: Following an Epoxy Resin Curing Reaction Application Reports en
Differentiating Between Different Vegetable Oils by Using Raman Spectroscopy Application Reports en
Distinguishing Between Different Crystal Modifications of Titanium Dioxide by Raman Spectroscopy Application Reports en
Finding the Optimal Focus Position Using the Cora 5X00 Sampling Inserts Application Reports en
Identification and Quantification of Different Types of Sugar in Aqueous Solution Application Reports en
Identification of Polymers Application Reports en
Identification of fuels Application Reports en
Identification of organic solvents Application Reports en
Identifictation of essential oils Application Reports en
Measurement of Highly Diluted Aqueous Solutions of Ammonium Persulfate Application Reports en
Measuring Graphene with a Benchtop Raman Spectrometer Application Reports en