Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:
Part of: 28 — Inorganic chemicals; compounds of precious metals, rare-earth metals
H328353 · 2023-06-09 — Internal Advice; Classification of 15N-isotopic Ammonium Sulfate
HQ H328353 June 9, 2023 OT:RR:CTF:CPMMA H328353 CKG CATEGORY: Classification TARIFF NO.: 2845.90.0100 Center Director Pharmaceuticals, Health & Chemicals Center U.S. Customs and Border Protection ATTN: Import Specialist Cathy Sheridan RE: Internal Advice; Classification of 15N-isotopic Ammonium Sulfate Dear Center Director, This is in regard to a request for internal advice, dated September 1, 2022, filed on behalf of Cambridge Isotope Laboratories, Inc. (CIL), regarding the classification under the Harmonized Tariff Schedule of the United States (HTSUS) of an ammonium sulfate isotope.…
954672 · 1994-01-13 — Application for further Review of Protest No. 0401-93-100312, dated May 25, 1993, concerning thallium-203 oxide and zinc oxide; non-radioactive isotopes; Note 1(a), Section VI; GRI 1
This is a decision on a protest filed May 25, 1993 against your decision in the classification of merchandise liquidated May 7, 1993 and entered on February 19, 1993. FACTS: The protestant entered all goods in subheading 2845.90.0000, Harmonized Tariff Schedule of the United States Annotated (HTSUSA), a provision for isotopes other than those of heading 2844, to be entered free of duty. Customs reclassified the merchandise identified as an oxide of thallium-203 under subheading 2825.90.6000, a provision for other metal oxides, and assessed duty at 3.7 percent ad valorem. Customs reclassified…
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