Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less
Part of: 25 — Salt; sulfur; earths and stone; plastering materials; lime, cement
c81682 · 1998-01-29 — The tariff classification of cat litter from New Zealand
With regard to your letter, which was received on November 12, 1997, on behalf of your client, Diatomite Products Limited, you requested a tariff classification ruling regarding cat litter. A representative sample of the item was submitted and was sent to our Customs laboratory for analysis. You indicated in your letter that the product is a naturally occurring mixture containing 80 percent diatomite and 20 percent pumicite. The lab determined that the sample, an off-white powder with clumps, is a siliceous earth having an apparent specific gravity of less than one. The applicable subheading…
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