Microsphere refers to the particle dispersion system formed by the drug dispersion or adsorption in the macromolecule, polymer. Microsphere are prepared by many carrier materials, which are mainly divided into natural polymer microspheres (such as starch microspheres, albumin microspheres, gelatin microspheres, chitosan, etc.) and synthetic polymer microspheres (such as polylactic acid microspheres).
Differences of Standard Microspheres from Different Manufacturers
Various polymeric microspheres have been widely used in many fields including medical treatment, biotechnology, and industrial production. The performance of microspheres products are affected by concentration, particle size, particle size uniformity, and Zeta potential. Nanocoulter I,which is independently developed by Resun, can be used with a one-time sampling to measure the full range of information on the development, production and application of microspheres.
Standard microspheres test from different manufacturers, identifying higher quality standard microspheres with extremely high resolution
Nanocoulter I test is as follows:
Nanocoulter I is used to test 100 nm standard samples from different manufacturers and compare the differences between standard samples.
Electron microscope test is as follows:
Test summary:
1.Through the test, the average particle size of manufacturer A is relatively consistent; 100 nm standard sample particle size distribution of manufacturer B has a large standard deviation.
2.The results are in good agreement with those obtained by electron microscope.
