Acid and Alkali Resistant Paper Additive
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8421290065 | 35.0% | CN | US | Official Doc |
| 3822190080 | 10.0% | CN | US | Official Doc |
| 3822190030 | 10.0% | CN | US | Official Doc |
| 4823201000 | 35.0% | CN | US | Official Doc |
| 4823209000 | 35.0% | CN | US | Official Doc |
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AI Analysis
π§ͺ Acid and Alkali Resistant Paper Additive (Chemical Resistance Filter Media)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Clearance Strategy
π I. Product Definition & Classification: What Exactly is "Acid and Alkali Resistant Paper"?
Acid and alkali resistant paper, often referred to as chemical resistance filter media or specialized laboratory consumables, is a high-performance filtration material designed to withstand harsh chemical environments. In international trade, its classification depends heavily on its primary use (industrial vs. laboratory) and material form.
Key Distinction: * Industrial Filter Media: Used in liquid filtration systems for chemical processing, wastewater treatment, etc. β Tends to fall under Chapter 84 (Machinery/Equipment) or Chapter 48 (Paper Products) depending on specific structure. * Laboratory/Analytical Consumables: Used for diagnostic tests, analytical chemistry, or general lab filtration. β Tends to fall under Chapter 38 (Miscellaneous Chemical Products) as "diagnostic or laboratory reagents."
β οΈ Critical Classification Point:
- If the paper is sold as a consumable for a machine (e.g., filter cartridges for industrial filters) β Look at 8421 or 4823.
- If the paper is sold as a reagent/consumable for analysis (e.g., litmus paper, analytical filter paper) β Look at 3822.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Reference)
| HS Code | Product Description | Applicable Scenario | Tax Rate (Total) |
|---|---|---|---|
8421.29.00.65 |
Parts of liquid filtering machines; Acid/Alkali resistant paper as consumables for liquid filtration | Industrial liquid filtration, chemical processing plants | 35.0% |
3822.19.00.80 |
Diagnostic or laboratory reagents; Acid/Alkali resistant paper for laboratory/analytical use | Lab research, chemical analysis, diagnostics | 10.0% |
3822.19.00.30 |
Diagnostic or laboratory reagents; Acid/Alkali resistant paper for diagnostic/lab consumables | General lab consumables, diagnostic testing | 10.0% |
4823.20.10.00 |
Filter paper and paperboard; Acid/Alkali resistant paper matching material category | General filter paper/board, neutral use definition | 35.0% |
4823.20.90.00 |
Filter paper and paperboard; Acid/Alkali resistant paper directly corresponding to material/use | Direct correspondence to paper material and use | 35.0% |
π Key Reminder:
- Chapter 38 (3822.19.xx) is the preferred route for laboratory/analytical applications, offering significantly lower duties (10% vs. 35%).
- Chapter 48 (4823.20.xx) and Chapter 84 (8421.29.00) are for industrial/material applications, attracting higher duties due to potential Section 301 and IEEPA tariffs.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surtaxes, Policy Add-ons)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Time: November 10, 2025 onwards (including subsequent imports)
π― 1. 3822.19.00.80 & 3822.19.00.30 ββ Laboratory/Diagnostic Reagents (Consumables)
| Item | Content |
|---|---|
| Base Tariff | 0% (ad valorem) |
| USITC Surtax (Section 301) | 0% |
| IEEPA Surtax (Section 122) | +10% (For China/HK products, effective Nov 10, 2025) |
| Total Rate | 10.0% |
| Tax Calculation | CIF Value Γ 10% |
| De Minimis Eligibility | β No (deny_de_minimis for Section 122) |
| Legal Basis Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3822.19.00.80/30 β FOOTNOTE:122 |
π Explanation:
- These codes fall under "Diagnostic or Laboratory Reagents."
- While the base duty is 0%, the 10% IEEPA (Section 122) tariff applies specifically to Chinese-origin lab consumables.
- Total effective rate is only 10%, making this the most cost-effective classification if the product is genuinely for lab/analytical use.
π― 2. 8421.29.00.65 ββ Parts of Liquid Filtering Machines (Industrial Consumables)
| Item | Content |
|---|---|
| Base Tariff | 0% |
| USITC Surtax (Section 301) | +25% |
| IEEPA Surtax (Section 122) | +10% |
| Total Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Eligibility | β No |
| Legal Basis Path | IEEPA:9903.01.25 β USITC:8421.29.00.65 β FOOTNOTE:301 & FOOTNOTE:122 |
π Explanation:
- If customs determines the paper is a part/consumable for industrial machinery (Chapter 84), it is subject to Section 301 (25%) + Section 122 (10%).
- This results in a much higher 35% total duty.
π― 3. 4823.20.10.00 & 4823.20.90.00 ββ Filter Paper and Paperboard
| Item | Content |
|---|---|
| Base Tariff | 0% |
| USITC Surtax (Section 301) | +25% |
| IEEPA Surtax (Section 122) | +10% |
| Total Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Eligibility | β No |
| Legal Basis Path | IEEPA:9903.01.25 β USITC:4823.20.xx β FOOTNOTE:301 & FOOTNOTE:122 |
π Explanation:
- Classified as "Filter Paper" under Chapter 48.
- Subject to the same 301 (25%) + 122 (10%) surtaxes as Chapter 84 items.
- Total duty is 35%, same as industrial machinery consumables.
π οΈ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
β 1. Document Checklist (All Mandatory)
| Document | Must Provide | Notes |
|---|---|---|
| β Product Spec Sheet | βοΈ | Must clearly state use case (Lab vs. Industrial) and chemical resistance properties. |
| β Usage Declaration | βοΈ | Explicitly declare if used for diagnostic/analytical purposes to support 3822 classification. |
| β Product Photos | βοΈ | Clear images of packaging, labels, and product form. |
| β Commercial Invoice | βοΈ | Description should match HS Code scope (e.g., "Laboratory Filter Paper" vs. "Industrial Filter Paper"). |
| β Certificate of Origin (CO) | βοΈ | Essential for verifying Chinese origin and applying surtaxes correctly. |
β 2. Declaration Strategy (Key Mantra)
π₯ "Lab Use is 10%, Industrial is 35%! Describe the Application, Not Just the Material!"
| Scenario | Correct HS Code | Error If Mislabeled |
|---|---|---|
| Paper used in Lab for analysis/diagnostics | 3822.19.00.80 / 3822.19.00.30 |
Mislabel as Industrial β Extra 25% Duty |
| Paper used in Industrial Filter Machine | 8421.29.00.65 / 4823.20.xx |
Mislabel as Lab β Risk of Penalty/Retrospective Duty |
| General Filter Paper (No specific use stated) | 4823.20.10.00 / 90.00 |
Vague description β Customs may default to 35% or demand clarification |
π Warning:
- Do not describe "Acid and Alkali Resistant Paper" vaguely.
- If it is for lab use, emphasize "Laboratory Reagent," "Analytical Consumable," or "Diagnostic Paper."
- If it is for industrial use, specify "For Liquid Filtering Machine" or "Industrial Filter Media."
β 3. Special Case Handling
| Case | Handling Advice |
|---|---|
| Mixed Use (Lab + Industrial) | Declare based on primary use in the shipment. If mixed, consult a customs broker for split classification. |
| Packaged with Reagents | If paper is sold as part of a diagnostic kit, classify under 3822. |
| Bulk Rolls vs. Cut Sheets | Form (roll/sheet) does not change HS Code, but use does. Ensure documentation matches. |
π V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3822.19.00.80 (Lab) |
10% | None | High efficiency for lab use. Industrial uses face 35%. |
| π¨π³ China | 3822.19.00 |
5-8% | N/A | Lower base duty, but verify local regulations. |
| πͺπΊ EU | 3822.00 |
0% | REACH | Low duty if correctly classified as lab reagents. |
| π¬π§ UK | 3822.00 |
0% | UKCA | Similar to EU post-Brexit. |
π Conclusion:
- USA is the most critical market due to high Section 301 and 122 tariffs.
- Classifying as Lab Reagent (3822) saves 25% compared to Industrial/Material classifications.
π VI. Common Errors & Pitfall Guide (Lessons Learned)
β Error 1: Describing product only as "Filter Paper" without specifying use.
π Consequence: Customs may assign 4823.20 (35% duty) by default.
β Error 2: Using "Acid Resistant" as the only keyword.
π Consequence: Ignoring the "Laboratory/Analytical" aspect leads to missing the lower 3822 code.
β Error 3: Assuming all "Paper" falls under Chapter 48.
π Consequence: Missing the higher-value, lower-tax 3822 classification for lab consumables.
β Correct Practice:
"Laboratory Filter Paper, Acid and Alkali Resistant, for Analytical Use, Model XYZ"
π― VII. Conclusion: Precise Classification Saves Money!
π― Remember the Mantra:
πΉ "Lab Use = 10% Duty (3822). Industrial/Material = 35% Duty (4823/8421). Specify Use Clearly!"
πΉ "Don't just describe the material; describe the application!"
π Pro Tip:
If your product is genuinely for laboratory analysis, ensure your commercial invoice and spec sheets explicitly state "Laboratory Use" or "Analytical Consumable." This simple description can save you 25% in tariffs under US Section 301 and 122 rules.
π£ Take Action Now:
π Contact a licensed customs broker.
π Provide clear Product Use Declarations.
π Classify correctly, clear smoothly, and maximize profit!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every dollar saved in duty is pure profit!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.