High-Purity Synthetic Silica Gel for Chromatography from Germany
Amorphous synthetic silica gel with controlled pore size used as stationary phase in column chromatography for lab separations. Falls under HTS 2811.22.10.00 as synthetic silicon dioxide, a separate chemically defined compound per Chapter 28 notes, excluding organo-silicon derivatives.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Supply pore size distribution and surface area specs to prove chromatography-grade purity
• Ensure no organic modifiers; pure silica gel stays in 2811, modified becomes 3824
• Declare particle size (e.g
• 40-63 micron) in entry docs to prevent reclassification as abrasives