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Technical Note: Principles of Sample Preparation by Grinding or Comminution
December 19th 2023Sample preparation is the process where a representative piece of material, chemical or substance is extracted from a larger amount, bulk or batch for subsequent analysis. Representative samples are selected to accurately reflect the larger group and represent the characteristics of the whole material. Ideally representative samples are homogeneous or similar in nature, but when that is not possible, the best attempts must be made to achieve samples which represent the majority of the characteristics of the larger grouping. The preparation of samples is one of the most important steps in analytical methods for many reasons, including the fact that some materials cannot be analyzed in an in-situ condition (such as proteins, DNA and RNA). Some samples have interfering substances and species that can produce faulty results. Sample preparation can include many processes, from reactions or treatment with chemical agents, to filtration, dilution, and extraction.
A Total Workflow Approach to Sample Prep Can Help Pharma and Nutra Labs Optimize Elemental Analysis
November 29th 2023This Executive Summary presents a ‘total workflow’ approach to sample preparation for elemental analysis that helps labs identify opportunities for optimizing their operations in terms of productivity, quality, costs, and safety. Systems and tools are presented along with the benefits they provide to the sample prep workflow and, ultimately, to overall laboratory operations.
Rapid Polymer Identification of Fishing Gear Using Raman Spectroscopy
November 2nd 2023the MacroRAM benchtop Raman spectrometer with remote BallProbe® is used to quickly identify plastics used in various gillnet samples. Raman spectroscopy is demonstrated to be an excellent technique for identifying not only different types of polymers, but also different variants within a polymer class and additives including pigments.
Quantitative Analysis Using Raman Spectroscopy in Pharmaceutical Applications
November 2nd 2023Raman can be an effective method for quantitative analysis under a variety of conditions involving different solutes in a solution and solution mixtures. In this application note, we demonstrate Raman spectroscopy and its application to pharmaceutical analysis such as content uniformity.
Polymers - Macroscopic Raman Spectroscopy to Monitor Chemical Reactions and Polymerization/Curing
November 2nd 2023This technical note will show how the HORIBA MacroRAM™, a macroscopic Raman system, can be used along with the HORIBA Superhead™, to monitor and analyze a simple polymerization-curing reaction of a two-part epoxy.