# HTS 9027: Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes; parts and accessories thereof:

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free

## Classification path

- **Section XVIII:** [Optical, Photographic, Measuring, Medical Instruments](https://plaintariff.com/section/xviii-optical-photographic-measuring-medical-instruments)
- **Chapter 90:** [Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof](https://plaintariff.com/chapter/chapter-90-optical-photographic-cinematographic-measuring-checking-precision-medical-or-surgical)
- **HTS code:** 9027

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/9027-instruments-and-apparatus-for-physical-or-chemical-analysis*