Product Index:
| Item | PEG-PCL microspheres | |
| CAS | PEG:25322-68-3;PCL:24980-41-4 | |
| Test items | Detection method | Inspection requirements | 
| Viscosity average molecular | Ubbelohde viscometer method | 30-50K、70-90K、90-110K | 
| Molecular weight distribution | GPC | ≤2.0 | 
| Particle size specification | laser particle size analyzer | 20-50μm、40-60μm | 
| Particle size span | laser particle size analyzer | ≤0.7 |