Application Notes

Optical fibers in ultraviolet-visible (UV-Vis) spectroscopy can enable measurements outside the traditional sample compartment. This paper details the components needed for fiber optic systems, such as couplers and probes, and reviews the performance of Agilent's Cary series instruments. It is crucial to choose the right fiber optic setup for a specific lab’s needs to ensure accurate and efficient measurements.

BLADE was used to digest various food samples, including those with high fat content, high protein content, and even high carbohydrate followed by analysis using ICP-MS.

BLADE was used to digest various food samples, including those with high fat content, high protein content, and even high carbohydrate followed by analysis using ICP-MS.

Heavy metals in baby food is a current topic near and dear to parents worldwide. In this app note, learn how to digest 5 g baby food samples in 5 mL of acid.

The C16767MA miniaturized ultraviolet (UV) spectrometer, developed by Hamamatsu, offers a groundbreaking solution for real-time, on-site water quality monitoring, replacing traditional, labor-intensive methods.

Melting point determination using ultraviolet-visible (UV-Vis) spectrophotometry can be used as a sequence-specific method for identifying therapeutic oligonucleotides in pharmaceutical quality control. This method offers a simple, highly selective approach to differentiate between isomers and ensure the integrity of oligonucleotide active pharmaceutical ingredients (APIs) and drug products.

Transmittance and reflectance measurements, which are useful for estimating the effects of various physical processes, can include thermal treatments, ionizing radiation exposure, optical exposure, and mechanical treatments—on both crystals and thin films.

Confocal Raman microscopy enables detailed and non-destructive analysis of semiconductors. In the video we present the application of confocal Raman microscopy to analyze material characteristics including doping, stress fields, crystallinity and warpage of a 150 mm (6 inch) silicon carbide (SiC) wafer. To maintain this nanoscale-precision across the macroscopically large x and y dimensions of an entire wafer, we used the WITec alpha300 Semiconductor Edition Raman microscope.

Modular Raman imaging microscopes provide a toolset for configuring experiments that can integrate complementary methods and evolve along with individual requirements. Following an introduction to the theoretical background, Dr. Ievgeniia Iermak will describe several of its variations including 3D Raman imaging and optical profilometry-guided measurements. Examples will be provided to demonstrate Raman imaging’s chemical sensitivity, high resolution, ease of use, and versatility for pharmaceutical research.

A focus on optimizing sample preparation in food and feed analysis can improve laboratory efficiency, data quality, and compliance with regulatory standards. Innovations like advanced microwave digestion and automated reagent handling can streamline workflows, improve safety, and ensure reliable analyses, ultimately supporting overall food safety.

Raman spectroscopy tracks hydrogen blending in gas turbines accurately and reliably, outperforming mass spectrometry with 100% uptime and easy adaptation for new fuels.

Explore the use of Raman to monitor a simple bioprocess, fermentation of glucose with yeast, qualitatively and quantitatively.

Transmission gratings open up many new options for the optical designer. In this tech note, we explore the benefits of transmission gratings over other types.

The Cary 3500 UV-Vis systems use temperature-controlled UV-Vis spectroscopy to analyze molecules' thermal stability. They are essential for nucleic acid quantification quality control by measuring absorbance at 260 nm and performing thermal melt identification verification. Melting temperature (Tm) analysis is key for studying nucleic acid denaturation.

All starting materials, including APIs, must undergo analytical identity (ID) determination before pharmaceutical manufacturing to ensure drug safety. Oligonucleotides pose challenges for ID due to sequence specificity. Melting temperatures (Tm) combined with intact mass measurements offer a solution using UV-based spectrometry for precise Tm determination at Vetter Pharma.

Vetter Pharma successfully uses the Cary 3500 UV-Vis to optimize thermal melt measurements of oligonucleotide-based pharmaceuticals.

Characterizing biomolecules such as oligonucleotides and proteins is critical to better understanding biochemical and molecular processes. UV-Vis spectroscopy is widely used for stability studies, protein aggregation, DNA quantification and purity, and enzyme activity. The Cary 3500 UV-Vis offers advanced features to provide accurate and reproducible results.

The drug discovery process involves identifying and characterizing drug targets to find lead compounds. Biochemical characterization (e.g., molecular weight, solubility, thermal stability) is crucial for protein therapeutics. Thermal stability studies measuring melting temperatures help understand protein stability, ligand-binding, and optimal storage, aiding drug development and commercialization.

This application note demonstrates the performance of a Milli-Q® ultrapure water system for the quality control of metals in food and water samples in regulated labs.

This application note demonstrates the performance of a Milli-Q® ultrapure water system for the quality control of metals in food and water samples in regulated labs.

Efficient charge extraction is crucial for high-efficiency solar cells. Electron and hole extraction layers optimize cell performance. PL spectroscopy, proportional to carrier number, is ideal for comparing extraction layer efficiency.

The pharmaceutical industry relies on Raman microscopy for product analysis and quality control. This technique is crucial for investigating a vast range of products, from life-saving medicines to everyday over-the-counter treatments.

Olive oil, especially extra virgin, is prized for its quality and purity. However, fraud and adulteration are significant concerns. UV-Vis spectrophotometry is a reliable technique for assessing olive oil quality by quantifying key compounds. An Edinburgh Instruments DS5 Spectrophotometer is used to evaluate olive oil quality and detect adulteration.

Photon upconversion converts low-energy photons to higher-energy photons. UCNPs, composed of rare-earth elements, can convert near-infrared light to visible or UV light. They have potential applications in solar energy and biomedicine. Understanding their luminescence properties is crucial for optimization. FS5 Spectrofluorometer was used for comprehensive upconversion characterization.

Raman OEM applications need consistent spectra to deliver dependable answers. Learn how to achieve >99.5% unit-to-unit agreement using a series of simple corrections.

Portable Raman spectroscopy bridges the gap between handheld & benchtop Raman. Learn the factors to consider when choosing a spectrometer, for research or OEM use.

Photosensitisers (PS) absorb light and reach a triplet excited state. This state interacts with a target species, transferring energy and inducing reactions. PS returns to its ground state and can participate in further photochemical activations.