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Characterization of PLGA Using SEC-MALS-VIS
23 Jan 2017In this application note, two commercially available samples were analyzed by SEC coupled to a Multi-Angle Light Scattering (MALS) detector (HELEOS), a refractive index detector (Optilab rEX), and a viscosity (VIS) detector (ViscoStar). The results demonstrate that SEC-MALS-VIS is an excellent method for the characterization of PLGA polyesters as it has the ability to determine not only the molar mass distribution, but to reveal subtle differences in PLGA’s molecular structure.
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Size Exclusion ChromatographySize exclusion chromatography (SEC) is a liquid chromatographic technique used to separate and identify molecules based on their size, including polymers, proteins, nanoparticles & nucleic acid. SEC is further subdivided into gel filtration chromatography (GFC) and gel permeation chromatography (GPC) when an aqueous or organic mobile phase is used respectively. HPLC-based SEC systems and columns are available for analytical separation alongside SEC spin columns or filters to prep samples for many protocols. Find the best size exclusion chromatography equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Particle CharacterizationParticle characterization instruments are used to determine particle size distribution, shape, surface area, zeta potential, density and porosity of particles and materials. Multiple tecchniques are available for determining particle size, shape and count including dynamic light scattering (DLS), laser diffraction, electrozone (Coulter technique), imaging particle analysis and single particle optical sensing. Determine the density of your material with a gas pycnometer or examine its surface area and porosity with gas adsorption analyzers and mercury porosimeters. Find the best particle characterization instruments in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Drug DeliveryDrug Delivery refers to dosage form, route of administration, formulations, technologies, and systems for transporting a pharmaceutical compound in the body as needed to safely achieve its desired therapeutic effect. Drug delivery is often approached via the biopharmaceutical or small molecule drug's formulation, but it may also involve medical devices or drug-device combination products. Considerations include instrumentation, software and services. Shipping / PackagingPackaging is the technology of enclosing or protecting products for distribution, storage, sale, and use and the process and production of packages. Packaging is closely linked to Shipping and the preparing of goods for transport, warehousing, logistics, sale, and end use. Within the pharmaceutical industry packaging and shipping are used for transport, storage and logistics between Contract Research Organizations (CROs), Manufacturing and Clinical Trial companies. Packaging is also critical in the final production of a pharmaceutical product before market. RegulatoryPharmaceutical regulations impact on all areas of drug development, manufacture and control and supply. Services are provided from the early stages of drug development and clinical trials through to dossier submission, approval and marketing. Regulatory also includes submission of analytical studies from the pharmaceutical product and safety. FDAThe Food and Drug Association (FDA) is an agency within the U.S. Department of Health and Human Services. Among other things, it is responsible for ensuring the safety, effectiveness and quality of drugs, vaccines and other biological products, and medical devices. Refractive IndexMolecular Weight AnalysisMolecular weight analysis determines the size and structure of biomolecules, essential in protein characterization, polymer studies, and drug development. Techniques like mass spectrometry ensure precise results. Compare solutions for molecular weight analysis in our peer-reviewed product directory.SECSize exclusion chromatography (SEC) separates molecules based on size, ideal for protein purification, polymer analysis, and biopharma applications. SEC ensures precise characterization of biomolecules for research and industry. Explore peer-reviewed SEC products and compare options for your lab.TherapeuticsTherapeutics are treatments designed to alleviate or cure diseases. These include pharmaceuticals, biologics, and gene therapies, which work by targeting specific disease mechanisms. Advances in personalized medicine and biologics offer new hope for patients with conditions that were previously difficult to treat. Browse our peer-reviewed product directory to find therapeutic solutions for various diseases; compare products, check user reviews, and get pricing directly from manufacturers.