酸性滤纸
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3822190080 | 10.0% | CN | US | Official Doc |
| 8421290065 | 35.0% | CN | US | Official Doc |
| 4823201000 | 35.0% | CN | US | Official Doc |
| 3822190030 | 10.0% | CN | US | Official Doc |
| 4823209000 | 35.0% | CN | US | Official Doc |
AI Analysis
🧪 Acid-Resistant Filter Paper: HS Code Classification & 2026 Customs Clearance Guide
🌐 HS Code Reference & Customs Strategy | 2026 Latest Tariff Analysis | Professional Compliance Guide
📌 I. Product Definition & Classification: What is "Acid-Resistant Filter Paper"?
Acid-resistant filter paper is a specialized laboratory or industrial consumable designed to withstand strong acidic environments without degrading. In international trade, its classification depends heavily on its primary intended use (Laboratory vs. Industrial/Fluid Processing) and material composition.
⚠️ Key Distinction Point:
- If used primarily for laboratory analysis, diagnostics, or chemical testing → Classified under Chapter 38 (Diagnostic/ Laboratory Reagents).
- If used primarily for industrial liquid filtration, purification, or mechanical separation → Classified under Chapter 48 (Filter Paper) or Chapter 84 (Machinery Parts).
📦 II. HS Code Classification Matrix (2026 Latest Tariff Authority Reference)
Based on the provided data, there are five potential HS Codes depending on the specific application and customs interpretation.
| HS Code | Product Description | Application Scenario | Tax Rate (Total) | Key Determination Factor |
|---|---|---|---|---|
3822.19.00.80 |
Diagnostic/Laboratory Consumables (Other) | Lab analysis, chemical testing, diagnostic procedures | 10.0% | Intended for laboratory/diagnostic use. |
3822.19.00.30 |
Other Laboratory/Reagent Consumables | General lab consumables not elsewhere specified | 10.0% | Broad category for lab/reagent items. |
4823.20.10.00 |
Filter Paper & Board (Specific) | General filtration, industrial/lab overlap | 35.0% | Material is paper/board; acid-resistance does not change material class. |
4823.20.90.00 |
Filter Paper & Board (Other) | Direct correspondence to material/usage as filter paper | 35.0% | Matches material & usage directly; no conflict with paper nature. |
8421.29.00.65 |
Parts/Consumables for Liquid Filtration Machines | Consumables for machines/devices purifying liquids | 35.0% | Considered a consumable for machinery (filtering/purifying apparatus). |
🔍 Critical Insight:
- Lowest Tax Option (10%): Requires proving the product is strictly for laboratory or diagnostic use (HS Codes:3822.19.00.80or3822.19.00.30).
- Standard Tax Option (35%): Applies if classified as paper material (4823...) or machine consumable (8421...). This is the safer, more common default if "laboratory use" is not explicitly documented.
💰 III. 2026 Tariff Rate Breakdown (Including Additional Duties & Policy Surcharges)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: November 10, 2025 (and subsequent imports)
🎯 1. Laboratory/Diagnostic Category: 3822.19.00.80 & 3822.19.00.30
(Lowest Tax Bracket: 10% Total)
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% (ad valorem) |
| Section 301 Duty (USITC) | 0.0% |
| Section 122 Duty (IEEPA) | +10% (Specific surcharge for this subheading) |
| Total Effective Rate | 10.0% |
| Tax Calculation | CIF Value × 10% |
| De Minimis Exemption? | ❌ No (Denied de minimis) |
| Legal Basis Path | IEEPA:122 → USITC:3822.19.00.80/30 |
📌 Explanation:
- These codes benefit from 0% base and Section 301 duties, but carry a specific 10% Section 122 surcharge.
- This is the most cost-effective classification, provided you can substantiate "laboratory/diagnostic" use.
🎯 2. Industrial/Material Category: 4823.20.10.00 & 4823.20.90.00
(Standard Tax Bracket: 35% Total)
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% (ad valorem) |
| Section 301 Duty (USITC) | +25% (Standard 301 tariff for Chinese goods) |
| Section 122 Duty (IEEPA) | +10% (Specific surcharge for this subheading) |
| Total Effective Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption? | ❌ No (Denied de minimis) |
| Legal Basis Path | IEEPA:122 → USITC:4823.20.10.00/90 → FOOTNOTE:Section 301 |
📌 Explanation:
- If classified as filter paper (Chapter 48), the 25% Section 301 tariff applies.
- Plus the 10% Section 122 surcharge.
- Total: 35%. This is the default if "laboratory use" is not clearly defined.
🎯 3. Machinery Consumable Category: 8421.29.00.65
(Standard Tax Bracket: 35% Total)
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% (ad valorem) |
| Section 301 Duty (USITC) | +25% |
| Section 122 Duty (IEEPA) | +10% |
| Total Effective Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption? | ❌ No (Denied de minimis) |
| Legal Basis Path | IEEPA:122 → USITC:8421.29.00.65 → FOOTNOTE:Section 301 |
📌 Explanation:
- If the filter paper is sold as a replacement part/consumable for a liquid filtration machine, it falls under Chapter 84.
- Same tax structure as Chapter 48: 25% + 10% = 35%.
🛠️ IV. Customs Clearance Practical Advice (Pitfall Avoidance Guide)
✅ 1. Preparation Checklist (Mandatory Documents)
| Document | Required? | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must detail: Material (e.g., cellulose, glass fiber), Acid resistance range (pH level), porosity. |
| ✅ Intended Use Declaration | ✔️ | Crucial for 10% vs 35%. Clearly state: "For laboratory analytical use only" or "For industrial liquid filtration." |
| ✅ Product Photos (Label & Pack) | ✔️ | Show packaging, brand, model, and any "Lab Use" or "Industrial Grade" markings. |
| ✅ Commercial Invoice | ✔️ | Must match HS Code description exactly. Avoid vague terms like "Paper." Use "Acid-Resistant Filter Paper for Laboratory Use." |
| ✅ Certificate of Origin (CO) | ✔️ | Required to determine applicability of Section 301/122 duties. |
| ✅ Packing List | ✔️ | Detail contents to avoid misdeclaration of parts vs. goods. |
✅ 2. Classification Strategy (Key Mnemonics)
🔥 "Lab Use = 10%; Material = 35%; Don't Guess!"
| Scenario | Recommended HS Code | Expected Rate | Risk Level |
|---|---|---|---|
| Sold to Labs/Hospitals | 3822.19.00.80 or 3822.19.00.30 |
10% | ⚠️ High Scrutiny: Must provide end-user proof or catalog showing lab application. |
| Sold to Factories/Plants | 4823.20.10.00 or 8421.29.00.65 |
35% | ✅ Low Risk: Standard industrial classification. |
| Ambiguous/General Use | 4823.20.90.00 |
35% | ⚠️ Moderate Risk: If "lab" claim is weak, customs may default to 35%. |
✅ 3. Special Handling Tips
| Situation | Recommendation |
|---|---|
| Mixed Shipments | If a shipment contains both lab filter paper and industrial filter paper, separate them into different line items to claim 10% for the lab portion. |
| OEM/Private Label | Ensure the invoice description aligns with the HS code. If labeling says "Industrial Grade," do not claim "Lab Use" for 10% tax. |
| Pre-Ruling Application | For large volumes, apply for an Advance Ruling from CBP. Submit samples and spec sheets to lock in the 10% classification if eligible. |
| De Minimis Risk | Do NOT use Section 321 (De Minimis) for this product. Both 10% and 35% rates explicitly deny de minimis exemption. Always file formal entry. |
🌍 V. Global Market Comparison (2026 Snapshot)
| Market | Likely HS Code | Approx. Duty Rate | Notes |
|---|---|---|---|
| 🇺🇸 USA | 3822.19.00.80 (Lab) / 4823... (Ind.) |
10% (Lab) / 35% (Ind.) | Section 122 & 301 apply. Strict documentation needed for 10%. |
| 🇨🇳 China | 4823.20.10.00 |
~15-20% | Import duty may vary; check latest PRC tariff schedule. |
| 🇪🇺 EU | 4823.40 |
~5-8% | No Section 122/301 equivalent. Lower tariffs. |
| 🇬🇧 UK | 4823.40 |
~5-8% | Post-Brexit tariff aligned closely with EU but independent. |
📌 Conclusion:
- The USA is the most complex market due to Section 301 and Section 122 duties.
- Cost Saving Opportunity: If your product is genuinely for lab use, aggressively pursue the 10% classification (3822.19.00.80) with proper documentation.
- Risk Mitigation: If documentation is weak, prepare for the 35% rate to avoid penalties and delays.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring industrial filter paper as "Lab Consumable" to get 10% tax.
👉 Consequence: Customs audit, penalty, back-tariff of 25% difference + interest.
❌ Error 2: Using "Filter Paper" without specifying "Acid-Resistant" or "Material."
👉 Consequence: Customs may reclassify to a different subheading with unknown rates, causing delays.
❌ Error 3: Assuming De Minimis (Section 321) applies.
👉 Consequence: Entry rejected. Section 122 explicitly blocks de minimis for these codes.
✅ Correct Approach:
"Acid-Resistant Filter Paper, High Purity, for Laboratory Chemical Analysis, Model XYZ, Box of 100 Sheets"
🎯 VII. Conclusion: Precision in Classification Saves Money!
🎯 Remember the Rule:
🔹 "Lab Use = 10% (Section 122); Industrial = 35% (Section 301+122)."
🔹 "Documentation is Key: No Proof = No 10%."
🔹 "No De Minimis: Formal Entry Required for All."
📌 Pro Tip:
If your product can serve both lab and industrial purposes, consider segmenting your sales:
- Sell to labs with lab-specific invoices → 10% Tax.
- Sell to factories with industrial invoices → 35% Tax.
This allows you to optimize costs where legally permissible.
📣 Immediate Action:
📞 Contact a licensed customs broker to review your product specifications.
📄 Prepare a "Use Statement" detailing the chemical resistance and intended lab environment.
🚀 Apply for an Advance Ruling if you plan to import significant volumes to lock in the 10% rate.
✨ Professional Clearance Starts with Accurate Classification!
💼 Every percentage point saved is pure profit!
Customer Reviews
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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.