1401-1425 of 1498 Resource Library
1401-1425 of 1498 Resource Library
APPLICATION NOTE
Introduction Polyethylene glycol (PEG) is a polyether compound derived from petroleum and one of the most popular polymeric materials with diverse industrial/biological/medical applications. PEG is routinely synthesized by polymerizing ethylene oxide, …
APPLICATION NOTE
Introduction Rare earth elements (REEs) are increasingly important in the production of high-specification electronic devices, and their discovery requires a rapid and cost-effective screening of survey samples for REE content, as greater resolution of …
APPLICATION NOTE
Introduction Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals developed in the 1940s, and widely used for their surfactant properties. Due to their prevalent use within consumer products and persistence in nature, PFAS have …
APPLICATION NOTE
Introduction Governing bodies have implemented various directives to monitor acrylamide in drinking water. This also applies in the European Union where the water framework directive and subsequent daughter directives have defined many priority …
APPLICATION NOTE
Introduction Fourier Transform Infrared (FT-IR) Spectroscopy is used routinely in the analysis of both new and in-service lubricants to determine chemical attributes such as oxidation, nitration, sulfation, water and soot. FT-IR microscope is a valuable …
APPLICATION NOTE
Introduction Tobacco specific nitrosamines (TSNA) are a group of chemicals found in tobacco, smokeless tobacco, and tobacco smoke. They are widely considered to be among the most important arcinogens in tobacco products and cigarette smoke. Tobacco …
APPLICATION NOTE
Introduction The increasing demand for organic products, evolving global regulations, and improving accessibility of agricultural hubs to global markets results in pressure on food safety precautions. Translating, in part, to increased pesticide residue …
GUIDE
Headspace Gas Chromatography (HS-GC) instrument performance is dependent upon proper operation, use of the correct consumables, and following manufacturer guidelines. Here we show a list of some of the best and worst practices during set-up and …
APPLICATION NOTE
Introduction Growing health concerns regarding Per- and polyfluoroalkyl substances (PFAS) and their prevalence in consumer goods and the environment indicates a critical need to perform existing and upcoming regulatory methods efficiently and reliably …
APPLICATION NOTE
Introduction Vitamins are involved in a variety of different physiological processes and must be assimilated with the daily nutrition as they cannot be synthesized within the human body. The biochemical functions of vitamin C (ascorbic acid) are mainly …
APPLICATION NOTE
Introduction Organic solvents are commonly used in the production of active pharmaceutical ingredients (API) and pharmaceutical products. The solvents are used for varying purposes including as synthesis reaction media, in the separation and …
APPLICATION NOTE
Introduction There are many types of nanocomposites - such as epoxy, polymer, and carbon tube materials. Nanocomposites are made from embedding materials into one another with at least one of the phases showing dimensions in the nanometer range. This …
APPLICATION NOTE
Introduction USP 467 is a widely used method for the determination of residual solvents in pharmaceutical products using gas chromatography (GC) with a flame ionization detector (FID). Due to the prescribed GC method settings, USP 467 has a long run …
APPLICATION NOTE
Introduction When CASE chemicals like coatings and paints are formulated, pigments, binding agents, and additives are dissolved into a carrier solvent, often a volatile organic compound (VOC) or water. This solvent functions to lower the mixture’s …
APPLICATION NOTE
Introduction There are a wide variety of characterization techniques which may be used to identify drugs of abuse, including infrared spectroscopy, Raman spectroscopy, mass spectrometry, gas chromatography, x-ray diffractometry, immunoassays and urine …
APPLICATION NOTE
Introduction The sale of alcoholic beverages is regulated and taxed differently than non-alcoholic ones. Other food products, such as fruits and sauces, may contain alcohol as well from natural fermentation. This application note will expand upon the …
APPLICATION NOTE
Introduction Fats and oils are used in cooking as a frying medium or as an ingredient in baking. Autoxidation of lipids in the fats and oils proceeds as a free-radical chain reaction that leads to rancidity causing foul flavors and smells. Phenolic …
APPLICATION NOTE
Introduction Histamine is a naturally occurring contaminant that can be found in improperly handled seafood. Quality tuna has histamine levels below 50 ppm and high levels of histamine in seafood can cause scombroid food poisoning. Scombroid poisoning …
APPLICATION NOTE
Introduction Acrylate polymers are utilized for a host of applications due to their varied physical properties and ease of synthesis. These acrylates are sought after specifically for coatings, adhesives, sealants and elastomers (CASE) applications …
APPLICATION NOTE
Introduction Urea is a white, crystalline solid containing 46% nitrogen. Due to its high nitrogen content, urea is the most widely used source of nitrogen for nitrogen-based fertilizers worldwide. The accurate determination of urea in urea-based …
APPLICATION NOTE
Introduction Different types of plastics are used for these diverse applications, but all plastic manufacturing has a few common raw material needs, including monomers and solvents. Plastic manufacturing workflows are designed to use all monomer input …
APPLICATION NOTE
Introduction Cetyl alcohol, also known as palmityl alcohol or 1-hexadecanol, is a long-chain aliphatic alcohol that is a common additive in foods, cosmetics, personal care products (e.g., lotions and creams), and industrial fuels. To ensure cetyl …
APPLICATION NOTE
Introduction The recent emergence of mRNA-based vaccines and therapies has made clear the need for reliable analytical methods that can successfully identify, characterize, and quantify mRNA. This chemical instability demands a deeper understanding of …
APPLICATION NOTE
Introduction At the height of the first wave of the COVID-19 pandemic, consumers around the world experienced a supply shortage related to alcohol-based hand sanitizer. As new producers entered the market, and existing manufacturers sought to ramp-up …
APPLICATION NOTE
Introduction This Application Brief demonstrates the ability of PerkinElmer's LC 300 instrument platform, and SimplicityChrom™ chromatographic data system (CDS) software to successfully meet the United States Pharmacopeia (USP) performance requirements …