B&W Tek’s Carbon Raman Analyzer (CRA) is a portable Raman system with 532nm laser excitation and a fiber optic sampling probe. The CRA is equipped with a high throughput spectrometer with back-thinned CCD TE-cooled to -25°C. It is ideal for materials in powdered forms, with no need for sample preparation. For easy, reproducible measurement, the CRA package includes a probe holder with an adjustable xyz stage and a Class 1 laser enclosure. No microscope is needed for the analysis. The BWSpec® software for data collection, spectral processing, and experimental set up configuration can be programmed to automatically calculate various parameters such as D- and G-band intensity ratios and G-band peak heights. BWSpec® can calculate and monitor up to six variables with real-time results displayed in a trend plot and a table simultaneously. With such ease of use, CRA allows graphene manufacturers to obtain at-line or on-line measurements for material characterization, product quality control, and process monitoring.
- Portable Raman system with 532nm laser excitation
- BWSpec® software with Timeline Experiment and Batch Re-Process configuration for automatic result and trend plot display
- Class 1 laser enclosure
- No microscope needed
- Non-destructive analysis
- No sample preparation
Creating Raman Scatter
In Raman spectroscopy, it is essential to utilize a clean, narrow bandwidth laser due to the fact that the quality of the Raman peaks are directly affected by the sharpness and stability of the delivered light source. The i-Raman® spectrometer system features a patented CleanLaze® technology with a linewidth < 0.3nm when equipped with our 785nm laser. This technology results in the correct center wavelength and avoids the phenomenon of “mode hopping.” In addition, the laser output power can be adjusted in the software from 0 - 100%, allowing you to maximize the signal-to-noise ratio and minimize integration time.
Laser lifetime of 10,000 hours ensures quality data for years to come!
Collects Data within 65 cm-1 of the Rayleigh Line
The center wavelength of the laser line is precisely maintained even when the peak power is increased by utilizing a series of high end filters. A laser line filter is used to clean up any side bands and ensure a narrow excitation is delivered to the sample by removing all secondary excitation lines before exciting the sample. The light collected from the sample is then filtered via a notch filter. Finally, an ultra steep long pass filter further removes lingering laser lines to allow accurate measurement of Raman peaks as close as 65 cm-1 from the Rayleigh line.
Optimized for Raman Spectroscopy
The spectrometer design in the i-Raman® is dedicated for Raman applications. You can customize your spectrometer by choosing from a variety of excitation wavelengths. In addition, each configuration can be further customized for your individual detection needs. Choose from wider spectral range or high resolution optimized systems. Research grade spectral resolution of 3.5 cm-1 can be achieved with our double pass transmission optics. Most Raman applications do not require such tight resolution, so a wider spectral range would be the better choice in that case. The high-throughput optical layout of all i-Raman® configurations are ideal for those low-light level Raman applications.
Easy Transition Between Sample Types
The probe allows for measurement of various materials in the form of liquids, gels, powders, or solids under both lab conditions (lab grade) or demanding environmental conditions (industrial grade). Constructed with state-of-the-art telecom packaging techniques, the probe has a flexible fiber coupling encased in a durable protective jacketing material. Wavelength excitation probes come in 532nm and 785nm.
The i-Raman Pro is controlled using the touch-friendly onboard BWSpec® Mobile software or by connecting to an external PC operating with BWSpec®. The BWSpec Mobile intuitive acquisition and control software provides real-time prediction capabilities and identification functions which display results immediately after data is acquired. Multivariate quantitative models applied in real-time allow for process monitoring with options to display trended results in control charts.
B&W Tek offers comprehensive software packages that provide solutions for Raman application needs. BWSpec® is the foundation for all B&W Tek software platforms and is provided with every Raman spectrometer. Our suite of software includes powerful calculations, easy data management, and user friendly, easy-to-follow work flow all at the tips of your fingers. Data can be readily exported from BWSpec Mobile for further analysis and model building in the BWIQ® chemometric software package.
Built on the proven BWSpec platform, BWID®-Pharma software is a fully 21 CFR Part 11 compliant software designed for pharmaceutical manufacturing facilities that are facing the increasing need for 100% inspection of incoming raw materials, and nondestructive methods for final product testing and counterfeit detection. In addition to all the features provided in BWID®, BWID-Pharma provides enhanced system access security, secured data storage, and an audit trail of data activities. IQ and OQ services are available.
B&W Tek’s software portfolio also includes BWIQ® a multivariate analysis software package for analysis of spectral data including exploratory, qualitative and quantitative analysis. BWIQ® combines traditional chemometric methods such as Partial Least Squares Regression (PLS) and Principal Component Analysis (PCA) with Support Vector Machine (SVM) regression and classification algorithms for non-linear datasets. It provides a range of preprocessing tools including smoothing, normalization, derivatives, and adaptive iteratively reweighted Penalized Least Squares (airPLS) algorithm for automatic baseline correction. BWSpec Mobile supports real-time prediction using models from BWIQ
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