Multi angle laser light scattering instrumentIt is a high-precision analytical instrument based on the principle of laser scattering. By detecting changes in scattered light intensity from multiple angles, it directly measures parameters such as absolute molecular weight, molecular size, and distribution of polymer materials without the need for standard sample comparison. It has the characteristics of high precision, wide measurement range, and automated operation, and is widely used in fields such as petrochemicals and biomedicine.

Core principle:

Laser scattering phenomenon: When a laser beam is irradiated onto molecules in a solution, the light interacts with the electron cloud in the molecules to produce scattering. The scattering angle is closely related to molecular size, molecular weight, and conformation.

Multi angle measurement: Simultaneously detecting changes in scattered light intensity from multiple angles, and calculating absolute molecular weight, molecular size, and distribution based on concentration data. This multi angle measurement method can provide more comprehensive and accurate particle characteristic data.

The principle of static light scattering: directly measuring the absolute molecular weight of polymers, with the characteristics of simplicity, directness, and high accuracy.

Main functions:

It can measure the absolute molecular weight, molecular weight distribution, mean square end radius of rotation, hydrodynamic radius, etc. of polymers and biomacromolecules, and can also distinguish different molecular weight groups, as well as the shape, branching rate and aggregation state of molecules. It can be used with gel permeation chromatography (GPC) to characterize the structure of polymers more comprehensively.

The services provided by our companyMulti angle laser light scattering instrument (Crown 21)It is the second-generation MALS chromatography online detector launched by Postnova Instrument Company. *The proxy MALS product is the PN3607 7-angle laser light scattering detector, which has practical users in China and has been well applied in the analysis and testing of ultra high molecular weight polyacrylamide. Crown 21 inherits and develops the PN3607 MALS, which is technically more mature and reliable. It is a multi angle static laser light scattering detector with 21 angles ranging from 7 degrees to 165 degrees. Compared with other popular laser light scattering detectors on the market, Crown 21 has high sensitivity, temperature stability, small baseline drift, and low noise.