1) Appearance: white granule
2) Molecular weight: 5 - 22 million minimum
3) Granule: 20 - 100 mesh
4) Solid content: 88% minimum
5) Hydrolyzing degree: 10 - 20%, 20 - 30% or 30 - 40%
6) Dissolving time: 2 hours maximum (10°C)
7) Insoluble: 0.5% maximum
8) Monomer free: 0.05% maximum