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APHA Color On-Line Monitoring with a ClearView™ Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
To determine APHA color on-line for process control or in the lab for product release. Aproach: An Optical Solutions’ PS-2-UV/VIS diode array spectrophotometer and HeaterCell™ fiber optic accessory were used to measure the visible spectra of the...
( View Full Article)
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Aromatics (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The aromatic content of gasoline determines many of its combustion properties. Since it also impacts the environmental characteristics of the fuel it is desirable to have accurate measurements of this parameter. The traditional analytical method for...
( View Full Article)
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Benzene (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Benzene is a naturally occurring compound in crude oil and a very useful chemical solvent and feedstock. Unfortunately, it can be a significant health risk and is therefore environmentally regulated in many common products especially gasoline. Thus...
( View Full Article)
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Caustic & Carbonate On-Line Monitoring with a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 optic probe. Background: The dominance of water in the...
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Caustic in Water with a ClearView™ Filter Photometer System (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Purpose: To measure NaOH concentration in water on-line with the no moving parts ChemView® filter photometer and a fiber optic flow probe for a slip stream. Approach: There are several ways to analyze a mostly aqueous stream. Water is an intense...
( View Full Article)
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Cetane Number of Diesel Fuels (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The Cetane number of a diesel fuel is a measure of the ignition properties and is an important specification that must be met during fuel production. The traditional laboratory method for Cetane number determination is the knock engine method in...
( View Full Article)
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Chemical Outlier Detection with a ChemView® Filter Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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) calibrations in which more than one wavelength predicts a...
( View Full Article)
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Continuous Fuel Identification for Pipelines with a ClearView™ Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Reliable, affordable, real-time identification of petroleum products flowing in pipelines to minimize waste and assist in transitions. Experimental: ClearView™ fiber optic filter photometer. Fiber optic flow probe with 1 cm optical path. Pair of 2...
( View Full Article)
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Continuous, On-Line NIR Analysis of Process Gasses (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Near infrared (NIR) is not commonly associated with on-line analysis of process gasses in comparison to infrared (IR) and the ubiquitous, but maintenance-intensive gas chromatograph (GC). The purpose of this application note is to demonstrate not...
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Epoxy Value On-Line Monitoring with a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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...
( View Full Article)
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Ethylene: Diethylene Glycols On-Line Monitoring with a ClearView™ Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
To replace a gas chromatograph (GC) by continuously measuring the amount of ethylene glycol in diethylene glycol using a near infrared (NIR) ClearView™ fiber optic filter photometer. Background: It is not obvious, even to many NIR practitioners,...
( View Full Article)
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Hydroxyl and Acid Numbers in Resin Melts with a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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. ...
( View Full Article)
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Low Levels of Organics in Water: Saccharin (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Under appropriate conditions, near-infrared (NIR) spectroscopy can be used to measure low levels of organics in water. This application note will discuss measuring saccharin to levels below 60 ppm over a temperature range of 16°C to 32°C. Saccharin...
( View Full Article)
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Near IR Spectroscopy in Process Analysis (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
NIR has been traditionally viewed by spectroscopists trained in laboratory methods as a less-than-useful spectral region that exists to fill the gap between the UV/VIS and IR regions. NIR peaks are broad, overlapped and much weaker than their IR...
( View Full Article)
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NIR Water Measurements Online Monitoring in Liquid Samples (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Water is perhaps the most common measurement made in the nearinfrared (NIR). This is due to its strong effect on product properties and chemical reactivity of the starting materials. From an analytical perspective, water is easy to analyze due to its...
( View Full Article)
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Octane Number (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The Octane number rating of a gasoline is an indication of how the gasoline will perform under various engine conditions. Two different ratings are included: Research Octane Number (RON) and Motor Octane Number (MON). Finished gasoline must meet...
( View Full Article)
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Pharmaceutical - Acetonitrile Clean-up (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
To provide continuous monitoring of acetonitrile (ACN):water mobile phase gradients utilized in prep scale reverse phase chromatographic separation of active pharmaceutical ingredients with a NIR Clear-View™ or ChemView® fiber optic filter...
( View Full Article)
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Phosphoric Acid Concentration (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The use of phosphoric acid solutions is common in the semiconductor industry to both clean and etch metal surfaces. The concentration of the phosphoric acid is important to optimize these processes. Typically the laboratory method used for this...
( View Full Article)
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Polymer - Iodine Value of Oils with Model 412 (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
An important characteristic of a fatty oil product is its iodine value (IV). This is a measure of the unsaturated fatty acid content and indicates the ease of oxidation or the drying capacity of the product. Empirically, the IV is expressed in terms...
( View Full Article)
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Polymer - OH Number with Model 412 (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The use of polymeric polyols is commonplace in the manufacturing of polyurethanes and other specialty polymers. The hyroxyl number (OH number) is a measure of the concentration of the hydroxyl groups on the polyol. This is an important parameter to...
( View Full Article)
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Semiconductor - Cleaning: NIR Spectroscopy to Monitor Cleaning Solutions in Semiconductor Wafer Manufacturing Process
(Spectrometers and Analytical Photometers)
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From this Article:
In a competitive semiconductor industry, where high volume and maximum efficiency mean everything, an emerging technology commonly used in the chemical and refining industries may be a suitable processing aid. Process Near Infrared (NIR) spectroscopy...
( View Full Article)
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Solvent Recovery Using a Near-Infrared ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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...
( View Full Article)
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Styrene - Ethylbenzene (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 to 80% styrene in ethylbenzene, but also...
( View Full Article)
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Water Analysis in an Alcohol-Brine Solution with a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 at 30°C with 5 mm quartz cuvette. Samples:...
( View Full Article)
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Water in Acetic Acid & p-Xylene with a ChemView® Filter Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 complete spectrum and multivariate analysis (PLS –...
( View Full Article)
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Water in Acetic Acid On-Line Monitoring with a ClearView™ Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Purpose: To determine water content in acetic acid with sample temperature correction. Approach: The PS¬-2 NIR diode array spectrometer was used to measure the near-infrared spectra of 0-15% water in acetic acid at various temperatures in a 5 mm...
( View Full Article)
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Water in Aromatic/Acetone Mixtures with a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 optic accessory at 47 ºC in the NIR with our PS-2E...
( View Full Article)
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Water in Ethylene Glycol Online Monitoring with a Clear View Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
Purpose: To determine water content in ethylene glycol (EG) without sample temperature control. Experimental: Our PS-2E NIR diode array spectrometer was used to measure the NIR spectra of 0 to 6% water in EG in the 25 to 35 °C temperature range...
( View Full Article)
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Water in Solvents (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
The measurement of low levels of water in hydrocarbon solvents is critical to many chemical processes. This note discusses the measurement of the water concentration in using fiber optic-based, Near-Infrared (NIR) spectroscopy. NIR can be applied in...
( View Full Article)
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Water in TiO2-Loaded Polymer with Reflectance NIR in a ChemView® Photometer (.pdf)
(Spectrometers and Analytical Photometers)
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From this Article:
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 TiO2 and water was added by weight. In order to...
( View Full Article)
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