When Particle Size is Important
- Malvern Laser Particle Size Analyzer
- Malvern Particle Size Analyser Manual
- Malvern Particle Size Analysis Ppt
The newly added NanoBrook series now includes backscattering at 173° in addition to the traditional 90° used in dynamic light scattering (DLS).
The overwhelming majority of natural and manufactured products involve particulate materials either in their final state or at some stage in their production. This is also true of proteins and nanoparticles. Particle size and particle size distribution are, therefore, often critically important parameters.
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At the simplest level, information on particle size can help maintain a more consistent product, enhancing end-user value and profitability. At a more complex level, careful control of particle size can reduce the need for in-process modifications and reworking, so making products more competitive. The presence of protein aggregates can ruin a pharmaceutical preparation.
Brookhaven offers a choice of particle sizing techniques to meet the diverse needs in industry or research:
Dynamic Light Scattering (DLS) provides a fast, simple method for submicron and nanoparticle sizing. In this technique, random intensity fluctuations arising from the Brownian motion of particles and proteins are analyzed by autocorrelation to give either a simple mean size and polydispersity (distribution width), or more complete distribution data even for multimodal distributions.
Dynamic Light Scattering (DLS) provides a fast, simple method for submicron and nanoparticle sizing. In this technique, random intensity fluctuations arising from the Brownian motion of particles and proteins are analyzed by autocorrelation to give either a simple mean size and polydispersity (distribution width), or more complete distribution data even for multimodal distributions.
Choose the NanoBrook 90Plus Particle Size Analyzer for routine measurements of particle size distributions from about 2 nanometers to about 6 microns in any liquid. Options include full zeta potential capability, the 90Plus Zeta and 90Plus PALS, and a high sensitivity detector, the BI-APD, for very small proteins and nanoparticles.
Choose the NanoDLS Nanoparticle Sizer for the highest sensitivity, low-volume, flow through measurements of particle size and distribution. It is particularly useful for proteins and other very small nanoparticles.
Choose the NanoBrook 173 or 173Plus using backscatter for extreme low volume samples such as proteins and polysaccharides. They are cost effective, essential tools for protein aggregation, protein crystallization and chemical formulation studies.
Choose the NanoBrook Omni for the ultimate in particle sizing and zeta potential of both colloids, nanoparticles, proteins and polymers. It works in both backscatter for rare, dilute samples like proteins as well as ninety degrees for larger colloids. Using phase analysis light scattering to determine zeta potential, measurements in saline and PBS are routine.
Malvern Laser Particle Size Analyzer
Choose systems based around the BI-200SM Goniometer and TurboCorr correlator for research applications requiring the most exacting particle size, molecular weight and complex fluid analyses.
Sedimentation/Centrifugation provides high resolution and accuracy over a wide size range from nanometers to microns. It is based on the fractionation of particles according to Stokes' Law, and particle density is the only special information required. Measurement times are typically in the range of five to thirty minutes, depending upon the breadth of the distribution.
Choose the BI-XDC for inorganic particles including ceramics, clays, refractories, ores and metal powders, in fact any x-ray absorbing material with diameters in the range of 10 nm to about 100 µm, depending on density differences. Direct mass response makes optical corrections unnecessary.
Choose the BI-DCP for the highest resolution size analysis on any type of particle from several nanometers to tens of microns in diameter which is, or can be, dispersed in a liquid. Applications include carbon blacks, emulsions, polymer colloids and organic pigments. Exact light scattering corrections are used to ensure accurate results.
Read More >>>Show Less >>>Particle size analysis is routinely required by industries as a critical control parameter for raw materials, manufacturing processes, and finished products. To fulfill this requirement of our esteemed customers, like you, we have installed the latest; Laser Diffraction based Particle Size Analyzer, the Malvern Mastersizer 3000, in our laboratory in New Delhi.
The System is equipped with both wet and dry mode accessories allowing the analysis of both powders and liquid dispersion. This new system has a large linear range of measurement from 10 nanometers to 3.5 millimeters allowing particle size measurements of diverse samples ranging from nanomaterials, right up to, coarse systems like pharmaceutical tablet granules.
Importance of Particle Analysis
Particle size and particle size distribution are amongst the most important physical properties of a particulate system, as particle size has a direct effect on a number of material properties, some of these are listed below –
- Dissolution rate and bioavailability of pharmaceutical products
- Chemical stability of reactive or hygroscopic materials
- Physical stability of suspension and emulsions in pharmaceuticals, pigments, and paints
- Flow properties of the powder and granules in manufacturing processes
- Efficacy of drug delivery system like inhalers
- Reactivity of chemicals and catalyst
- Texture and feel of food products, creams, ointments, cosmetics
- The appearance of powder coatings and inks
- Viscosity, especially in the case of sprays
- Packing density and porosity in ceramic
Common Techniques Used for Particle Analysis
Depending on the particle size range and the nature of data required (size and/or shape and/or surface characteristics) various techniques are available for the measurement of particle size. Some of the main techniques are listed below –
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- Mechanical Dry or Wet Sieving
- Optical Microscopy
- Sedimentation Rate – using Andreasen apparatus
- Coulter Counter, which measures particle volume
- Dynamic Light Scattering (DLS) – mostly used for the submicrometer size range
- Scanning Electron Microscopy (SEM)
- Transmission Electron Microscopy (TEM)
- Atomic Force Microscopy (AFM)
- Automated imaging
- Laser Diffraction – the principle used in Malvern Mastersizier 3000
Malvern Mastersizer based on Laser Diffraction is the Gold Standard for Particle Analysis
Laser Diffraction in general and the Malvern Mastersizer range of particle size analyzer, in particular, are recognized as the industry gold standard for particle size analysis. They have gained the reputation because of the excellent accuracy and repeatability and reproducibility offered by the system as can be seen summarised in the table below.
Malvern Mastersizer MS3000 Performance Summary | |
Size range | 0.01-3500μm |
Accuracy | Better than 1% |
Repeatability | Better than 0.5% |
Reproducibility | Better than 1% |
Angular range | 0.015-144° |
The red light source | Max. 5mW He-Ne, 632.8nm |
Blue light source | Max. 10mW LED, 470nm |
Laser diffraction is accepted and prescribed by various Pharmacopoeias, ASTM, DIN, ISO and numerous other national and international standard methods for particle size measurements. It finds applications in diverse industries ranging from chemicals, fine chemicals, pharmaceuticals, food ingredients, food products, minerals, ores, and cement et cetera.
Malvern Particle Size Analyser Manual
Arbro is one of the largest contact testing laboratories in India having two state-of-the-art laboratories and a team of over 200 skilled professionals. In keeping with our policy of “Offering the most technologically advanced portfolio of services to our customers” we have made this investment to expand the scope of our services based on feedback from our customers.
Malvern Particle Size Analysis Ppt
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