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HSChapter 90
U.S. imports of gas or smoke analysis apparatus (HS 902710) totaled $86.3M in April 2026, traded with 63 countries.
Importers of Gas or Smoke Analysis Apparatus paid $5.9M in duties in April 2026 — an effective duty rate of 10% on $57.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataCombustion analyzers, emissions monitors, and industrial gas detectors used in environmental compliance, process safety, and stack-emission testing are the commercial core of this heading. The US schedule distinguishes electrical apparatus (9027102000), optical non-electrical instruments (9027104000), and other types (9027106000) — a split that matters for both duty rates and EPA or OSHA regulatory acceptance of the measurement method. Mexico is the leading US import source, with Germany and Japan supplying high-precision analytical units widely used in laboratory and continuous-emissions-monitoring (CEMS) applications. Importers should note that apparatus intended for vehicle exhaust testing may face additional scrutiny regarding EPA certification requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Heading 9027.10 covers apparatus whose primary function is analyzing the composition or properties of a gas or smoke mixture. Simple alarm-type gas detectors that only signal the presence of a gas above a threshold — without providing compositional analysis — may instead classify under Chapter 85 as electrical safety or signaling equipment. The distinction turns on whether the device performs qualitative or quantitative analysis versus merely triggering an alert.
CBP expects technical specifications confirming the operating principle: instruments using infrared, UV, or visible-light absorption (e.g., NDIR analyzers) without an electrical measurement output classify as optical non-electrical under 9027104000, while those with electronic signal processing and output classify as electrical under 9027102000. Manufacturer datasheets and circuit diagrams are the standard supporting documents.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 9027102000 | ELECTRICAL GAS OR SMOKE ANALYSIS APPARATUS | $72.5M | 9.99% | $4.5M |
| 9027106000 | GAS OR SMOKE ANALYSIS APPARATUS, NESOI | $12.1M | 11.39% | $1.2M |
| 9027104000 | OPTICAL INST&APPTS, GAS OR SMOKE ANALYSIS,EXC ELEC | $1.8M | 10.73% | $217K |
ELECTRICAL GAS OR SMOKE ANALYSIS APPARATUS
GAS OR SMOKE ANALYSIS APPARATUS, NESOI
OPTICAL INST&APPTS, GAS OR SMOKE ANALYSIS,EXC ELEC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9027100000 | GAS OR SMOKE ANALYSIS APPARATUS | $110.2M |
GAS OR SMOKE ANALYSIS APPARATUS
362.3K kg
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI
HS 901890
MED NEEDLES. NESOI, CATHERERS ETC AND PARTS ETC
HS 901839
ARTIFICIAL JOINTS & PARTS & ACCESSORIES THEROF,NES
HS 902139
ELECTRO-DIAGNOSTIC APPARATUS NESOI, AND PARTS ETC.
HS 901819
OZONE,OXYGEN,ETC THERAPY, RESPIRATION APPARATUS,PT
HS 901920
MEAS CHECKNG INSTRUMENT & MACH, NOT OPTICAL, NESOI
HS 903180
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $13.3M | $17.1M | +$3.8M |
| California | $13.3M | $9.6M | -$3.7M |
| South Carolina | $5.0M | $12.6M | +$7.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW ORLEANS, LA | $4.8M | $15.1M | +$10.2M |
| CHICAGO, IL | $4.2M | $13.1M | +$9.0M |
| CLEVELAND, OH | $6.5M | $8.9M | +$2.4M |