B27 Supplement for Neural Stem Cells from China
B27 is a serum-free supplement added to basal media for neural progenitor and stem cell cultures, containing antioxidants, lipids, and trophic factors. While supplemental, complete formulations classify under HTS 3821.00.00 for cell maintenance.
Duty Rate — China → United States
17.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide light-protected shipping for lipid component stability
• Document as 'media supplement - research use' distinctly
• Test for endotoxin levels below 0.1 EU/mL per import specs