HS Code for Filter paper pulp

Filter paper pulp, specifically in the form of blocks, slabs, or plates, is classified under HS code 4812.00. This heading is unique within Chapter 48 as it specifically addresses products made from paper pulp that are designed for filtration but are not yet "paper" in the traditional sense of thin, flexible sheets. These articles are typically thick, rigid, and highly porous, created by compressing vegetable fibers (usually wood or cotton) into dense masses. The classification is determined by GRI 1, as the heading 4812.00 specifically describes "Filter blocks, slabs and plates, of paper pulp." These products are used in large-scale industrial filtration, such as in the beverage industry for clarifying liquids or in chemical processing. The essential character of these items is their bulk and density, which allows for deep-bed filtration, a process different from the surface filtration provided by thin filter papers. The absence of a subheading under 4812 ensures that all forms of these pulp-based filter blocks are consolidated under this single code.

Products Included

• Compressed paper pulp filter blocks
• Filter slabs made of cellulose fibers
• Porous plates of paper pulp for liquid clarification
• Thick cellulose filter pads for industrial presses
• Masses of vegetable fibers for deep filtration

Common Misclassification

Filter paper pulp is often confused with HS code 4823.20 (filter paper cut to size) or 4805.40 (filter paper in rolls). The key difference is the thickness and form; 4812.00 is for blocks and slabs, while the others are for sheets. It may also be misclassified under Chapter 47 (codes 4701-4706) which covers raw wood pulp. However, once the pulp is formed into a specific article like a filter block, it must move to Chapter 48, specifically 4812.00.

FAQ

What is the HS code for filter paper pulp blocks?

The HS code for filter blocks, slabs, and plates of paper pulp is 4812.00.

How does 4812.00 differ from standard filter paper?

HS code 4812.00 applies to thick, rigid blocks or slabs used for deep filtration, whereas standard filter paper (4823.20) refers to thin sheets cut to shape.