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Malvern Instruments – Pharmaceutical Equipment Supplier White Papers

Malvern Instruments – Pharmaceutical Equipment Supplier

Malvern Instruments: Characterization of Biopharmaceutical Stability with Differential Scanning Calorimetry Biosimilarity and batch-to-batch comparability.
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Malvern Instruments: Exploring the impact of particle characteristics on suspension rheology How particle size, shape and zeta potential influence suspension rheology. Many products are suspensions or dispersions of particles in a liquid medium. Examples range from adhesives, ceramics, paints and inks through to foods, drinks, personal care products and medicines. The physical properties of the dispersed particles in such systems, including particle size, particle size distribution, concentration, electric charge (zeta potential), and even particle shape, can all strongly influence the overall (bulk) rheological properties of a suspension, thereby defining product behavior and functionality. Understanding these interactions is crucial when it comes to achieving desirable product performance, whether it be a stable paint or medicine, workable cement, or a visually appealing shower gel or drink. This white paper examines the impact of particle properties on suspension viscosity, and more broadly on rheological behavior. It looks in some detail at how particle size, shape and zeta potential influence critical aspects of suspension performance such as viscosity and stability and how these properties can be manipulated to tailor this behavior.
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The new MicroCal PEAQ-DSC Automated System Eight reasons to upgrade from the MicroCal VP-Capillary DSC system. Use of Differential Scanning Calorimetry (DSC) in biopharmaceutical development. Differential scanning calorimetry (DSC) is an established biophysical tool for protein stability characterization during biopharmaceutical drug development. DSC data are used to advance the most stable and 'developable' proteins into the pipeline, and optimize the process and formulation conditions to maintain protein stability during manufacturing and storage.
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Malvern Instruments Discusses GPC/SEC Analysis of Polymer Solutions Used in Inkjet Printing Inkjet printing of polymer solutions is an area of interest for depositing precise, high-throughput patterns of functional polymer. The applications of the polymer patterns include OLEDs, organic circuits, and textiles. The efficacy of this printed pattern can be negatively impacted by the concentration and viscosity of the polymer solution, the molecular weight and molecular weight distribution of the polymer, and level of branching in the polymer. Therefore, it is of keen interest to understand the effect of inkjet printing on the degradation of polymers. In this application note, the molecular weight (MW) and molecular weight distribution (MWD) of various polymers is shown as a function of time during inkjet printing. The data shown in this application note is from references [1-2].
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Malvern Instruments: Gold Nanoparticle Applications and Characterization by Nanoparticle Tracking Analysis This work is a review of nanoparticle size and concentration analysis in gold colloid applications. Gold nanoparticles are one of the most popular and extensively researched type of nanoparticle. A Google Scholar search of the term "gold nanoparticles" results in over 500,000 hits. Applications range from the biological to the material, and include nanomedicine, drug delivery, cancer diagnostics, biological scaffolds, biosensors, contrast agents, catalysts, and CMP slurries for the manufacturing of microprocessor [1].
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Malvern Instruments compares metal powders from different atomization processes using automated image analysis Image analysis is an ideal tool for characterizing the size and shape distributions of atomized metal powders. The manufacture of complex shaped metal parts by Metal Injection Molding (MIM) is a growing industry. The shape and size of metal powders play an important role in determining process efficiency and properties of the final MIM components. Spherical powder particles are typically favored by MIM manufacturers looking to achieve best tolerances and properties in final components. Therefore, it is important to monitor atomized powder to ensure that particles of the desired shape and size are produced.
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Malvern Instruments Explores Nanobubble Applications and Characterization Malvern Instruments conducts an in depth review of ultra-fine bubble (nanobubble) applications and characterization examples. The generation, measurement, and applied technologies of so-called nanobubbles or ultra-fine bubbles, with diameter ranging from tens to hundreds of nanometers, are evolving dramatically in recent years. The unique properties of nanobubbles makes them attractive for a number of applications such as facility cleaning, food disinfection, and water treatment, as well as possibilities in fields such as disinfecting food products, pharmaceutical delivery, decontamination, and manufacturing of functional materials. Preliminary market research conducted by the Fine Bubble Industries Association shows the size of the fine bubble business increasing from USD 20 million in 2010 to USD 4.3 billion in 2020.
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Synergy of Complementary Nanomaterial Characterization Techniques: NTA+DLS Dynamic Light Scattering (DLS) is a mature and proven technology for nanomaterial characterization. Nanoparticle Tracking Analysis (NTA) is a more recent addition to the spectrum of particle characterization techniques and has many similarities to DLS, leading to some confusion as to their relative capabilities. The broad range of measurement capabilities for each technique is complementary in nature, providing a wealth of valuable information. The differences between the two techniques allow the data from one technology to validate and support the other.
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Using the Zetasizer Nano to Optimize Formulation Stability Formulation development is a critical activity for many industries, from pharmaceuticals, to paints and coatings. Indeed, it is estimated that in the UK alone, sales of formulated products amount to some £180 billion per year1. This means that getting formulation ‘right’ is an important goal, with considerable value attached to it. Stability is a crucial attribute for many products with a direct impact on performance, shelf-life, kerb appeal and ultimately, worth. A systematic approach to understanding and developing stability can therefore be extremely helpful in improving the likelihood of success in long-term stability trials and accelerating formulation. The Zetasizer range from Malvern is the world’s most widely used system for nanoparticle, colloid and protein size and zeta potential measurements. In this whitepaper, we examine how these capabilities can be exploited to develop stable dispersions.
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Key Considerations when Purchasing an Advanced GPC/SEC System Investing in a new GPC/SEC system is a big decision with many factors to consider. This white paper lists the key items that you should think about when buying a new system and discusses the reasons for their importance. Finally, it discusses what Malvern has to offer in this area.
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Going with the Flow: Malvern Instruments' Basic Introduction to Rheology Rheology concerns itself with materials that have aspects of both solids and liquids, and researches the flow and deformation of matter. Malvern Instruments explores this study, and reveals its fundamental in relation to force, deformation and time.
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Malvern Instruments Shares its Buyer's Guide to Protein Stability Measurement Platforms As a leader in best practices during biopharmaceutical development, Malvern Instruments sheds light on effective protein stability analysis technologies for the biopharmaceutical industry.
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Five Ways That the Mastersizer 3000 Saves you Money To earn its place in today’s busy analytical laboratories, an instrument must meet certain practical criteria, and stand-up to rigorous economic evaluation. For labs that need particle sizing, laser diffraction systems are typically the technology of choice; delivering accurate and reliable information for the broadest range of sample types. Here, we look at how the Mastersizer 3000, the market leading laboratory particle size analyzer from Malvern Instruments, can save you time, money and resources, and ultimately deliver a healthy return on investment.
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Time to Spec up? Top Five Reasons to Replace a Viscometer with a Rheomete Is your viscometer approaching the end of its life? Are you starting to feel that your trial and error, ‘rheology-light’ approach to formulation is becoming dated? Or are there longstanding product performance issues that you’re failing to gain traction with, where you suspect rheology may hold the answer?
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Biophysical Characterization of Epigenetic Protein Interactions Epigenetics is the study of heritable changes in gene expression caused by nongenetic mechanisms, without alterations in gene structure or DNA sequence. The epigenetic state of a cell evolves during the cellular differentiation and development of an organism, and epigenetic changes are linked to cellular reprogramming. Because epigenetic mechanisms may also be responsible for the integration of environmental responses at he cellular level, they potentially play an important role in the development of som diseases.
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Overcoming and Quantifying 'Wall Slip' in Measurements from a Rotational Rheometer When making shear rheological measurements on structured liquids, in particular suspensions, emulsions or foams there is a high probability that the measurement may be affected by a phenomenon known as 'wall slip'. Wall slip generally results from a localdepletion of the dispersed phase near the geometry walls, effectively forming a lubrication layer at the surface. As a consequence bulk rheological properties are no longer being accurately measured leading to an underestimation of the true viscosity. A similar effect can be observed when measuring solid like materials where there is insufficient friction between the sample and the wall to support the applied stress.
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Preformulation and Stability Studies of Biotherapeutics Using DSC The use of biotherapeutics, such as antibodies and other protein molecules, to treat diseases is a rapidly growing field in the pharmaceutical industry.Biotherapeutics are often required at high concentrations and multiple doses, hence a manufacturer must produce kilogram quantities or more of the protein drug. The manufacturing process for biotherapeutics involves protein expression in thousands of liters of bioreactor medium followed by a purification process using large-scale chromatography columns and filtration systems.
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Protein Storage and Stability Analysis Using the Zetasizer Nano ZSP Spidroins are a unique family of large, structural proteins that make up the bulk of spider silk fibres. The mechanical strength and elasticity of spider silk fibres have led to their successful use in the regeneration of peripheral nerves in rats [1], with the same properties giving the potential for use in a wide range of other applications [2,3,4]. The production of these proteins on an industrial scale, however, has only become possible fairly recently
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Using Differential Scanning Calorimetry to Inform and Accelerate Process Development for Protein Therapeutics The production and purification of immunoglobulins of the gamma isotype, particularly human IgG1, for diagnostic or therapeutic applications is now fairly routine. In the past decade IgE-based therapeutics have also gained momentum (1-3). IgE is important for host defense against parasites and for protective inflammation. Yet, IgE-mediated signaling through its receptors is also a focal point of inflammatory allergic disease (4). The constant region of IgE, is a homodimer containing duplicate pairs of three unique Ig-fold domains (Cε2, Cε3, and Cε4), and is responsible for binding its two receptors, FcεRI and CD23, also known as FcεRII.
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Evaluating Product Texture Using Oscillatory Testing on a Rotational Rheometer Formulating products to have both the correct functional and sensory attributes can be a difficult task. The latter in particular relies heavily on user feedback which can take considerable time and effort to attain. In addition it is not always easy to interpret such feedback in the context of material properties and hence rheological data.
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NTA: Drug Nanocarriers Part 6 of NTA 1000 publications review.
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NTA: Applications in Drug Delivery Part 5 of NTA 1000 publications review.
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Estimating BSA Aggregation Kinetics with Dynamic Light Scattering and Raman Spectroscopy Towards a unified biophysical characterization platform: Combining dynamic light scattering and Raman spectroscopy*.
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An Introduction to DLS Microrheology Microrheology techniques involve tracking the motion of dispersed probe (or tracer) particles in a complex fluid, to extract local and bulk rheological properties of the matrix. Analogous to mechanical rheometry techniques, a stress is applied to the system by motion of the probe particle, and the deformation (or strain) is measured through changes in the probe particle position.
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A Basic Guide to Particle Characterization The aim of this guide is to provide a basic grounding in the main particle characterization techniques currently in use within industry and academia. It assumes no prior knowledge of particle characterization theory or instrumentation and is ideal for those new to particle characterization, or those wishing to reinforce their knowledge in the field. The guide covers introductory basics, particle sizing theory and particle characterization instrumentation, as well as a quick reference guide to help you decide which techniques might be most appropriate for your particle characterization needs. It is not inclusive of all particle characterization techniques; more information can be found at www.malvern.com.
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NTA: Environmental Impact of Nanoparticles Part 4 of NTA 1000 publications review.
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NTA: Nanoparticle Toxicity At the same time as an increasing interest in, and rapid development of, a wide range of materials and products containing nanoscale structures and engineered nanoparticles, awareness has grown that the longer term potential toxic effects of such materials and their potential environmental impact are poorly understood. Existing methods have been assessed and new methods sought by which such materials could be analyzed on a routine basis during development and manufacture.
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Orthogonal and Complementary Nanoparticle Characterization Techniques How can I trust my data? This is a common concern for many researchers using particle measurement instrumentation. Is the data affected in any way by the measurement technology, or alternatively by the user during sample preparation or by the analysis parameters employed? To answer this question we need to consider the use of independent and orthogonal measurement techniques in order to provide confidence and measurement validation.
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The Benefits of Real-Time Analysis for Process Development While much effort is expended in optimizing commercially operating plant, getting the process 'right first time' can be far more efficient. Real-time analysis of process parameters provides substantial support during development, streamlining and accelerating the evolution of successful process designs. Taking on-line particle size analysis as an example, this paper considers the rationale for investing in real-time measurement for pilot scale work. Case studies illustrate the various ways in which on-line systems promote efficient process development, easing the transition into profitable manufacture.
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Understanding Yield Stress Measurements Many complex fluids, such as network forming polymers, surfactant mesophases, emulsions etc do not flow until the applied stress exceeds a certain critical value, known as the yield stress. Materials exhibiting this behavior are said to be exhibiting yield flow behavior. The yield stress is therefore defined as the stress that must be applied to the sample before it starts to flow. Below the yield stress the sample will deform elastically (like stretching a spring), above the yield stress the sample will flow like a liquid.
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