HS 90.25

Heading

Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not

HS Code 90.25 classifies "Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not" under Section XVIII (Optical, Photographic, Measuring, Medical Instruments). This heading-level code is used internationally for customs classification, tariff determination, and trade statistics.

Classification Details

HS Code90.25

DescriptionHydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not

LevelHeading (4-digit)

SectionXVIII — Optical, Photographic, Measuring, Medical Instruments

Chapter90

🇺🇸 US Import Duty

Average Duty Rate2%

Duty Range0-6.6%

NotesOptical, medical, measuring instruments

Free Trade AgreementsITA: 0% for many items. Most FTAs: 0%

Rates are approximate and based on MFN (Most Favored Nation) tariffs. Actual rates may vary by specific product classification. Always verify with USITC for official rates.

Classification Guide

When classifying goods under HS 90.25, ensure the product matches the specific description. This is a heading-level code. For customs declaration, you may need the more specific 6-digit subheading. Check with your national customs authority for additional digits required.

🇺🇸 US Import Document Checklist

Documents required when importing products under HS 90.25 into the United States.

Required for All Imports

☑Commercial InvoiceCBP

Detailed invoice from the seller showing product description, quantity, unit price, total value, and terms of sale (Incoterms).

☑Packing ListCBP

Itemized list of contents in each package, including weights, dimensions, and marks/numbers matching the shipping containers.

☑Bill of Lading (B/L) or Airway BillCarrier

Transport document issued by the carrier confirming receipt of goods for shipment. Acts as a contract of carriage and receipt.

☑CBP Entry Summary (Form 7501)CBP

The formal customs declaration filed with US Customs and Border Protection for all commercial imports.

☑Importer Security Filing (ISF/10+2)CBP

Must be filed at least 24 hours before ocean cargo is loaded. Required for all ocean shipments to the US.

☑Customs BondCBP

A financial guarantee ensuring payment of duties, taxes, and fees. Required for commercial shipments over $2,500.

FTA Certificate of Origin (for preferential rates)

🤝USMCA Certificate of Origin — self-certification by importer, exporter, or producer. No prescribed format.

🤝Korea-US FTA Certificate of Origin — can be issued by importer, exporter, or producer.

This checklist is for general guidance only. Actual requirements may vary based on specific product, country of origin, and current regulations. Always consult with a licensed customs broker or the relevant agency for official requirements.

Sub-Classifications

9025.11Thermometers and pyrometers; liquid filled, for direct reading, not combined with other instrumentsSubheading 9025.19Thermometers and pyrometers; (other than liquid filled, for direct reading), not combined with other instrumentsSubheading 9025.80Hydrometers and similar floating instruments, barometers, hygrometers, psychrometers, thermometers, pyrometers; recording or not, any combination of these instruments (excluding thermometers and barometers not combined with other instruments)Subheading 9025.90Hydrometers and similar floating instruments, barometers, hygrometers, psychrometers, thermometers, pyrometers; recording or not, any combination of these instruments, parts and accessoriesSubheading

Related HS Codes

90.01Optical fibres and optical fibre bundles; optical fibre cabl 9001.10Optical fibres, optical fibre bundles and cables; excluding 9001.20Optical elements; polarising material, sheets and plates the 9001.30Lenses, contact; unmounted, of any material, excluding eleme 9001.40Lenses, spectacle; unmounted, of glass, excluding elements o 9001.50Lenses, spectacle; unmounted, of materials other than glass 9001.90Optical elements; lenses n.e.c. in heading no. 9001, prisms,90.02Lenses, prisms, mirrors and other optical elements, of any m

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Frequently Asked Questions

What is HS Code 90.25?

What products fall under HS 90.25?

HS Code 90.25 covers: Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not. This is a broad category that includes more specific subcategories. Browse the child codes below for detailed product classifications.

How do I use HS Code 90.25 for customs?

Is HS 90.25 the same in every country?

The first 6 digits of HS codes are standardized worldwide by the World Customs Organization (WCO). However, most countries add additional digits (8-10 total) for their national tariff schedules. Always verify the full code with your destination country's customs authority.

What is the US import duty for HS 90.25?

The average US import duty for products under HS 90.25 is approximately 2% (range: 0-6.6%). ITA: 0% for many items. Most FTAs: 0% Note: actual rates depend on the specific product classification and country of origin. Verify with USITC for official rates.

Can I get a lower tariff rate under a Free Trade Agreement?

ITA: 0% for many items. Most FTAs: 0%. The US has FTAs with 20 countries including Canada, Mexico (USMCA), South Korea (KORUS), Australia, and others. To qualify for preferential rates, goods must meet rules of origin requirements and have proper documentation (e.g., Certificate of Origin).

Data verified March 2026 · Source: UN Comtrade & USITC

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