Partica mini LA-350-紧凑型激光粒度仪

As the needs of the chemical industry change and products require more detailed inspection to maximize quality and quantity, the analytical instrumentation available must adapt to fill the space. Both the LA-950 and Camsizer successfully meet the needs for research and routine quality control through the provision of speed, ease of use, repeatability, reproducibility, and reliability. Laser diffraction analyzers measure from nanometer to millimeter sized wet or dry dispersed polymers. Dynamic image analysis systems are preferred when product size grows and shape factors become important.

It was easy to perform these measurements and achieve the desired COV values using either the LA-950 or LA-300. The two systems gave slightly different results for the same sample. This is not uncommon in the field of particle characterization. Two different models systems will not typically generate the exact same results. The LA-950 is a newer design and is more automated. The LA-950 is the instrument of choice in the laboratory setting when the broadest possible size range and capability is required. The LA-300 is a smaller, more portable system, making it the ideal system when these measurements are made in the field. HORIBA Instruments delivers the advanced measurement technologies and world wide expertise and support required by the drilling fluids and exploration industries.

Asphalt-aggregate roads have traditionally been made by an asphaltcoated aggregate hot-mixed at a central plant. Continued development of asphalt emulsions has increased the number of types available and improved applications knowledge, leading to a growing use in road building.

A number of additives are used in papermaking, from calcium carbonate used as a filler to a variety of minerals and latex added to the surface coating to improve brightness, gloss and printability. The selection of the additive depends on the surface finish required and the final use of the paper. Colored papers require the addition of a pigmenting agent. The particle size of all these materials affects surface finish, color strength, and mechanical properties. Smaller particle size provides a smoother surface and better coverage per unit of additive.

LUDOX silica is a well known and characterized colloid that has been studied using various particle size analysis techniques including acoustic spectroscopy, laser diffraction, and dynamic light scattering. One such product, LUDOX TM-50, is a 50 wt% suspension of colloidal silica in water. It can be used as a “real world” reference material to test the performance of laser diffraction particle size analyzers. As with many colloids, good dispersion is critical for LUDOX TM to meet specifications. The importance of using a simple salt solution to dilute this material is shown below. LUDOX TM-50 has been tested and incorporated as a particle size reference material for the LA-950. ?

To confirm the possibility of Zeta potential measurement of smallest particle, Lysozyme has been chosen. Measurement results indicate 2.0 nm particle’s Zeta potential measurement is successfully executed using HORIBA’s SZ-100 nano partica series. In the similar way, Zeta potential of other nano particles including nano proteins can be measured using HORIBA’s nano patrica.

The isoelectric point of lysozyme (which is a protein) was measured. The value obtained coincides well with the one reported in literature. Lysozyme is a form of enzyme that catalyzes the hydrolysis of polysaccharides in vivo. While in vivo, this protein is denatured by changes in temperature and pH, either varying or losing its liveliness. Measuring its dependence on these two parameters thus provides valuable information for the study of enzymatic reactions.

Ferritin is known to exhibit higher thermal and pH stability than most other proteins and exist stably without showing any drastic change in property with changing pH. This stability can be confirmed using zeta potential.

BSA 和溶菌酶的 Zeta 电位和 pH 关系曲线与预期 相符。等电势点的滴定过程简单易行，每个实验仅需 1 小时。用于实验的塑料碳涂层电样品池没有任何降 解的迹象，仍可用于后续更多的实验。 碳涂层电的创新性使用标志着蛋白质 Zeta 电位 的测量转变为一个任何人都可以操作的简单实验。