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Epoxy Value On-Line Monitoring with a ChemView® Photometer

From Guided Wave, Inc.
 

 

Purpose: To measure epoxy value and starting liquid resin content with the two-probe Simulplex™ ChemView® photometer and fiber optic insertion probes with simple, easy-to-maintain, linear calibrations.

Approach: The NIR peak at 2208 nm is traditionally used to measure epoxy value. However, this intense peak requires a narrow optical narrow path (2 mm). Also, the basic liquid resin starting material is a spectral interferent, requiring more sophisticated (multivariate) calibration methods. The Optical Solutions' PS-2 diode array spectrometer was used to measure the NIR spectra of 13 samples at 190°C in a 5 mm cuvette in the HeaterCell™ fiber optic accessory.

Product Announcements
StellarNet, Inc. - Instruments to Measure Color
StellarNet's BLACK-Comet colorimeter is applicable for color measurements of food, beverages, industrial and home liquids, textiles, plastics, pharmaceuticals, and raw materials. (read more)
StellarNet, Inc. - Dual Detector Spectrometers
The StellarNet DUAL-DSR spectrometers are fiber optically coupled instruments that cover a "Super Range" from 0.2-2.3um for spectroscopy measurements on a PC via USB-2 interface. The spectrograph... (read more)
Malvern Instruments, Inc. - NIR Analyzer - Spectral Dimensions SyNIRgi ™
The SyNIRgi, a new Near Infrared chemical imaging (NIRCI) product, builds on the highly successful Spectral Dimensions Sapphire/NIRCI-2450 platform. Rugged instrumentation with no moving parts,... (read more)
StellarNet, Inc. - StellarNet InGaAs Extended Range Spectrometers
StellarNet has announced the NIRX-SR series of spectrometers for the 0.9-2.3μm wavelength range with a 512 element InGaAs Photo Diode Array and high speed USB-2.0 interface. The extended range... (read more)
StellarNet, Inc. - Fluorometer
StellarNet has announced the CXR-FS, a low cost system for fluorescence spectroscopy. The components include a miniature fiber optically coupled, thermo electrically cooled (TEC) UV-VIS spectrometer... (read more)
Avantes - Near-Infrared Fiber Optic Spectrometer
The AvaSpec-NIR256 Fiber Optic Spectrometers is based on the AvaBench-50 symmetrical Czerny-Turner design with 256 pixel InGaAs Detector Array. The spectrometer has a fiber optic entrance connector... (read more)
MTI Instruments Inc. - Fotonic Vibration Sensor
MTI-2000 Fotonic Sensor is a non-contact displacement, vibration and position sensor using state-of-the -art fiber optic technology. (read more)
JASCO - JASCO's Portable FT-IR System-VIR-9000 Series
The VIR-9000 series is a compact, lightweight, flexible FT-IR system. The collimated entrance and exit ports make it an ideal instrument for a wide range of applications. The standard instrument... (read more)
Microwave Photonic Systems, Inc. - Single Stage Optical Isolators
The MPS-2000 Single Stage Optical Isolator is a singlemode, polarization-independent isolator that can be connected or spliced into an optical transmission line. (read more)
 
Topics of Interest
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,... (Read More)
Objective: Measure water to better than ±0.01% (wt.) in an aromatic liquid mixture with a Chem- View® photometer. Experimental: Samples were measured in a 5 mm cuvette in our HeaterCell fiber... (Read More)
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 simultaneously measure caustic (NaOH) and sodium carbonate in aqueous process streams, particularly at low (<2%) caustic concentrations, using a ChemView® NIR photometer and fiber... (Read More)
To measure hydroxyl and acid numbers on-line in resin melts to determine end-of-reaction across different products with a Clear-View™ or ChemView® photometer and fiber optic probe. (Read More)