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Pharmaceutical Ingredient Uniformity Determination Using LIBS
Steve Buckley, PhD, TSI Incorporated
The uniform blending of active pharmaceutical ingredients (API) and excipients is critical to product quality. The homogeneity of ingredients within a batch or tablet must often be rapidly determined with minimal sample modification. In this experiment, LIBS analysis was used to rapidly monitor batch powder and tablet homogeneity.
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Mixed-Batch Food Sample Microwave Digestion
Arshad Kokardekar and David Gunn, Milestone Inc.
Single reaction chamber (SRC) microwave digestion offers a unique solution over traditional microwave digestion as a sample prep method for food analysis with the capability of simultaneous mixed-sample digestion.
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EDXRF App Note: The Analysis of Metals in Nickel Ore
Scott Fess, Applied Rigaku Technologies
Rigaku EDXRF application note #1366 demonstrates a method for the analysis of important metal oxides in nickel ore using the empirical approach. The results of this study indicate that the Rigaku NEX QC+ EDXRF analyzer can achieve excellent results for the measurement of the key metal oxides NiO, Fe2O3, TiO2, Cr2O3, and MnO.
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DST-1000 Acid Purification System
Don Potter, Savillex
The Savillex DST-1000 Acid Purification system produces high purity acid from low cost trace metal grade acid. It can be used to purify HNO3, HCl, and HF. The DST-1000 can pay for itself in a short period of time through the cost savings by using trace metal grade acid instead of bottled high purity acid.
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Drinking Water Analysis Following U.S. EPA Method 200.7 Using the Teledyne Leeman Labs Prodigy7 ICP-OES
Manny Almeida, Teledyne Leeman Labs
Method 200.7 requires adherence to specific procedures to ensure analytical quality control. Some of these procedures are designed to demonstrate the initial performance of the instrument, while others assess the ongoing performance of the laboratory. This application note describes the capability of the Teledyne Leeman Lab’s Prodigy7 ICP-OES for performing analyses of drinking water samples in accordance with US EPA Method 200.7.
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Measuring DNA Absorbance with the STS-UV Microspectrometer
Yvette Mattley, PhD, Ocean Optics
Biological molecules are routinely measured using UV absorbance to obtain critical information on concentration and sample purity. With a wavelength range of 190 to 650 nm and approximately 1.5 nm optical resolution, the STS-UV microspectrometer is ideal for these measurements.
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