Oyster Shells
Empty shells from shucked oysters, a mollusc product of Chapter 3, used for lime production or poultry grit. HTS 0511.91.00 covers these unfit dead animal remains. Separated from live/fresh oysters in Chapter 3.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If ground into powder for industrial use
Powdered shells may classify as bone/ivory-like products under 0508.
If with edible adductor muscle
Oysters with meat for consumption stay in Chapter 3.
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Import Tips & Compliance
• Clean shells thoroughly to remove flesh residues avoiding reclassification as food waste
• Declare calcium content if processed for feed to check fertilizer regulations
• Bulk ship to affirm non-retail industrial intent
Related Products under HTS 0511.91.00
Dried Fish Maws
Dried swim bladders from fish such as croaker or sturgeon, used in traditional cuisine and as gelatin sources. Classified under HTS 0511.91.00 as a product of fish unfit for direct human consumption in its raw form but processed for specific uses. Excluded from Chapter 3 as it's a derived product rather than fresh or frozen fish.
Fish Heads and Offal
Whole fish heads, viscera, and trimmings from processing, unfit for human consumption due to spoilage or contamination. HTS 0511.91.00 covers these dead animal products of Chapter 3 aquatic species for industrial rendering. Not classified as edible fish under Chapter 3.
Shrimp Shells and Heads
Waste shells, heads, and exoskeletons from shrimp processing, used for chitin extraction or animal feed. Falls under HTS 0511.91.00 as products of crustaceans (Chapter 3) unfit for human consumption. Distinct from edible shrimp meat in Chapter 3.
Dead Whole Crabs
Unfit whole dead crabs from Chapter 3, rejected due to disease or spoilage, for rendering or bait. HTS 0511.91.00 applies to such crustacean products not suitable for human food. Excludes fresh or preserved edible crabs.
Squid Viscera and Waste
Innards, ink sacs, and processing waste from squid (molluscs of Chapter 3), unfit for consumption. Classified in HTS 0511.91.00 as dead aquatic invertebrate products for industrial uses like fertilizer. Not covered as edible seafood.
Clam Processing Waste
Guts, shells, and siphons from clam harvesting, unfit for human use due to contamination. As mollusc products from Chapter 3, they fit HTS 0511.91.00 for dead aquatic remains. Used in fishmeal or compost.