Spectroscopy App Note: Having trouble viewing this e-mail? Click here.   Featured Application Note: Programmable-Gain Transimpedance Amplifiers Maximize Dynamic Range in Spectroscopy Systems Luis Orozoc, Analog Devices, Inc. This article uses a real-world example to show the benefits and challenges of implementing a single-stage programmable-gain TIA to minimize noise while maintaining high bandwidth and high accuracy. Read More

Dye-Protein Binding Monitored in Microliter Volume Using Time-Resolved Fluorescence Horiba The study of protein binding is important in clarifying their interaction with a variety of target molecules. Recent interest in the study of phenolic compounds stems from their antioxidant activity with potential health benefits. Read More Rapid Detection of Counterfeit and Substandard Medicines with Handheld Raman Rigaku Raman Technologies, Inc. Counterfeit pharmaceuticals can include both products containing potentially harmful substances and products that contain little or none of the active ingredients. Rigaku 1064 nm Advanced Analysis Technology can expand the list of identifiable materials, distinguish between authentic and counterfeit products, and analyze materials through packaging. Read More Measuring the Opacity of Plastic Tubing with Vis-NIR Spectroscopy Yvette Mattley and Ruud Niesen, Ocean Optics Plastic tubing is available in a variety of opacities ranging from clear to translucent. The transparency of plastic tubing is varied for reasons such as providing contrast for visual monitoring of fluid flow, decreasing exposure to ambient light, and making the tubing more distinct for machine vision technology. In this application note, visible-NIR transmission spectroscopy is used to assess the amount of frosting applied to plastic tubing to determine if the tubing meets the required opacity level. Read More Evaluating the Purity of Olive Oil Using UV-vis Spectroscopy Shimadzu Chemistry standards have been established for the evaluation of olive oils, and this note demonstrates the ability of a UV-vis spectrophotometer to analyze the purity of olive oil samples, allowing for distinction between extra virgin olive oil and olive oil as outlined by the International Olive Council. Read More DairyGuard: Augmenting Nutritional Testing of Milk Powder with Adulterant Screening Ben Perston and Rob Packer, PerkinElmer Milk powder is one of the most widely traded food commodities. Dairy products are a frequent target of food fraud, the DairyGuard™ Milk Powder Analyzer detects potential adulterants. Read More

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