Polyacrylamide Gel Casting Dam from China
Precision-machined silicone dams used to form leak-proof seals during polyacrylamide gel polymerization in vertical electrophoresis setups like Bio-Rad Mini-PROTEAN. Exclusively for non-optical detection instruments. Falls under HTS 9027.90.54.00 as an essential accessory for chemical analysis apparatus.
Duty Rate — China → United States
35%
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Provide gel cassette compatibility specs to confirm electrophoresis-specific design
• Test for silicone purity certification to meet lab chemical resistance standards
• Distinguish from general rubber parts (4016) via functional description