</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Formalin Tissue Fixative Solution from Mexico

Buffered 10% formalin solution specifically formulated for histological tissue preservation in medical labs. Remains under HTS 2912.11.00.00 as chemically defined methanal solution; buffers don't constitute other oxygen functions per chapter notes.

Duty Rate — Mexico → United States

12.8%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Include buffer composition; phosphate buffers common but must not create 'other oxygen function' per heading definition

FDA registration required for medical device/pathology imports even if classified as chemical

Small volume retail packs risk reclassification under 3822 if labeled as 'diagnostic reagents'