Stability and particle size analyzerIt is an important tool for evaluating sample stability and particle size distribution, and has wide applications in fields such as pharmaceuticals, food, cosmetics, and materials science. The following is about thisStability and particle size analyzerDetailed introduction and analysis:
Stability analyzer
Function:
The stability analyzer is specially developed for formula research and liquid sample stability control. It can measure phenomena such as sample separation, sedimentation, suspension or clarification, flotation, aggregation, coagulation, as well as product shelf life and particle size distribution.
It can qualitatively and quantitatively analyze the mechanism and rate of change of unstable phenomena, providing effective and accurate information for determining the feasibility of formulas and the quality stability of products, and significantly reducing experimental time.
Measurement principle:
The stability analyzer mainly uses the principle of multiple light scattering to obtain the changes in concentration or particle size of the sample at a certain cross-section by measuring the changes in transmitted light and backscattering intensity.
The optical system includes components such as a light source, a sample cell, and a detector. The light emitted by the light source passes through the sample in the sample cell and is detected and converted into an electrical signal by the detector. By processing and analyzing the electrical signal, stability information of the sample can be obtained.
Application fields:
Research and development of suspension formula, research and development of emulsion and foam solution, detection and improvement of unstable suspension, prediction of product storage stability (Shelf life), monitoring of centrifugal accelerated separation process, determination and control of optimal dosage of settling agent, etc.
Suitable for industrial oils, slurries, pharmaceuticals, cosmetics, food, coatings, dyes, chemical suspensions, CMP grinding fluids, nanoscale soft particles, colloids, polymer suspensions, agricultural products, lubricants, wastewater treatment, slurry separation, pulp and paper industries, etc.
Advantage:
Quickly and accurately analyze the stability of samples and provide qualitative and quantitative data.
The stability of the sample can be analyzed without damaging or contacting the sample.
Can analyze the reasons for sample instability and provide direction for formula improvement.
Particle size analyzer
Function:
The particle size analyzer is used to measure the particle size and distribution of particles, and is an important means of characterizing particle characteristics.
It can provide information such as the equivalent particle size and particle size distribution of particles, which helps to understand the physical and chemical properties of particles.
Measurement principle:
The principles of particle size analyzer mainly include laser diffraction principle, dynamic light scattering principle, etc.
The principle of laser diffraction is based on the diffraction and scattering phenomena that occur when light is confined by particles during propagation, and the particle size is calculated by measuring the spatial distribution of diffracted and scattered light energy.
The principle of dynamic light scattering is to calculate the particle size by measuring the light intensity fluctuations caused by the Brownian motion of particles in liquid.
Application fields:
Particle size analyzers are widely used in fields such as pharmaceuticals, food, cosmetics, materials science, ceramics, pigments, polymers, and chemical engineering.
For example, in the pharmaceutical field, particle size analyzers can be used to study the impact of drug particle size distribution on drug dissolution and bioavailability; In the field of food, it can be used to study the influence of particle size of food additives on food quality.
Advantage:
The particle size analyzer has the advantages of wide measurement range, accurate measurement, high precision, and good repeatability.
It can automate sample processing, data collection, and analysis, greatly improving work efficiency.