... grade as pharmaceutical auxiliary material.For HPMC, the special low viscosity like 3 cps,5cps,10cps,15cps is better used in ... the taste of tablets.Below is specification of HPMC low viscosity (E3, E5, E10,E15)3cps, 5cps, 10cps, 15cps.just difference ... between the viscosity. GradeE3E5E10E15Hydroxypropoxyl content:wt%7.0-12.07.0-12.07 ...