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
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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'