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%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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'