
HPMC
Particle size; 100 mesh pass rate is more than 98.5%; 80 mesh pass rate is 100%. Particle sizes of special specifications ranged from 40 to 60 meshes.
In ophthalmology it is used due to its good wetting properties, excellent tissue and endothelium protection, efficient volume replacement and quick removal. Specifically, it can be used to wet the cornea during cataract, corneal or retinal procedures.


HPMC


Hydroxypropyl Methylcellulose is non-ionic cellulose mixed ether made from refined cotton by alkaline treatment and then by a series of reactions with propylene epoxide and methyl chloride as etherifying agents. The degree of substitution is generally 1.2-2.0. Its properties are varied depending on the difference of the proportion of methoxy content and hydroxy-propyl content.