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From Guided Wave Incorporated
Purpose: To measure the concentrations of ethyl acetate (EtOAc- 80-90%), methanol (MeOH - <10%) and water (<10%) for continuous control of a solvent recovery process to reduce distillation time and processing costs. Approach: Use our PS-2E diode array spectro-photometer to collect the NIR spectra at 30 °C in a 2 mm cuvette in our Heater- Cell accessory. Perform a partial least-squares (PLS) analysis. Use the number of PLS Factors and the Beta Coefficients to determine the number and locations of the wavelengths to use in an MLR model. Extract the absorbance data at those wavelengths and import them into Microsoft® Excel®. Use our OutlierDetect™ Excel® add-in to determine the MLR coefficients and perform the outlier analysis. Products & Services
Distillation equipment and solvent recovery systems are used for steam and wastewater stripping, chemical product purification, and solvent recovery.
Flame photometers use atomic emission for the routine detection of metal salts, principally sodium (Na), potassium (K), lithium (Li) and calcium (Ca).
Diode arrays are composed of multiple discrete (usually unconnected) diodes on a single silicon chip. Diode arrays are important semiconductor products because they save assembly time and improve reliability over individually packaged diodes. In general, diode arrays use four or more diodes in a single package.
Dye lasers use a dye solution as an active medium. Their output is a short pulse of broad spectrum content with a high achievable gain.
Wafer and thin film instrumentation includes quartz crystal microbalance (QCM) monitors, ellipsometers, RHEED systems, imaging stations, CD-SEMs, ion mills, and C-V systems specifically designed for wafer metrology or in-situ monitoring of thin film parameters during thin film or semiconductors wafer processing.
Product Announcements
Topics of Interest
Challenge: Can quantitative analysis be done with a multiple wavelength filter photometer? Background: The spectra of this 3-component mixture are complex. Initial visual inspection suggests that a...
(Read More)
Purpose: To determine water content in a white polymer liquid containing TiO2 using a near-infrared (NIR) Chem-View® photometer and fiber optic reflectance probe.
Approach: Samples were mixed with...
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Purpose: Measurement of water in a multiple alcohol and brine solution with a ChemView® photometer. Experimental: PS-2E fiber optic diode array NIR spectrometer, 2 m low-OH optical fibers, HeaterCell...
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Optical Solutions, Inc. has introduced a new option for its Chem-View® process photometers - OutlierDetect™. It provides chemical outlier detection with most multiple linear regression (MLR)...
(Read More)
Purpose: Replace on-line GCs for rapid control of a styrene purification column by measuring styrene at two points using a Simulplex™ ChemView®. Background: The first point is from the overhead with 0...
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Technical Articles
Solvent Recovery Using a Near-Infrared ChemView® Photometer (.pdf)
- Spectrometers and Analytical Photometers
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