Of articles of subheading 9027.30.40
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: > Microtomes; parts and accessories: > Parts and accessories: > Of electrical instruments and apparatus: > Other: > Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 > Of articles of subheading 9027.30.40
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 9027.90.56.30
Spectrophotometer Quartz Cuvette Holder
Precision-machined holder designed specifically for securing quartz cuvettes in UV-Vis spectrophotometers classified under HTS 9027.30.40. It ensures accurate alignment and positioning for reliable absorbance measurements across wavelengths. This accessory falls under 9027.90.56.30 as a dedicated part for these electrical analytical instruments.
Electrode Assembly for pH/Conductivity Meter
Replaceable electrode module with glass membrane and reference junction for electrical spectrometers and ion analyzers under 9027.30.40. Provides precise measurement of hydrogen ion concentration and electrical conductivity in solutions. Classified here as an essential electrical part integral to the instrument's function.
Fiber Optic Probe for Raman Spectrometer
High-performance fiber optic probe with sapphire ball lens for remote sampling in Raman spectrometers (9027.30.40). Transmits laser excitation and collects scattered light for non-destructive molecular analysis. This specialized accessory qualifies under 9027.90.56.30 due to its principal use with covered electrical apparatus.
Sample Changer Carousel for Atomic Absorption Spectrometer
Automated 50-position sample carousel with stepper motor drive for atomic absorption spectrometers under 9027.30.40. Enables high-throughput analysis of trace metal concentrations in liquids. Falls under this HTS as an electrical part dedicated to the specified instruments.
Detector Module for FTIR Spectrometer
DTGS pyroelectric detector module with preamplifier for Fourier Transform Infrared spectrometers (9027.30.40). Converts IR radiation to electrical signal for spectral analysis. Classified as an electrical part under 9027.90.56.30 for these specific analytical instruments.
Tungsten Lamp Housing for UV-Vis Spectrophotometer
Precision-aligned deuterium/tungsten lamp housing assembly for UV-Vis spectrophotometers of 9027.30.40. Provides stable light source for quantitative analysis from 190-1100nm. This electrical component qualifies under 9027.90.56.30 as a dedicated instrument part.
Gas Cell Assembly for FTIR Gas Analyzer
10cm pathlength gas cell with ZnSe windows and gold-coated mirrors for FTIR gas spectrometers under 9027.30.40. Enables quantitative infrared analysis of gas mixtures. Classified here as a critical optical/electrical part for covered instruments.
Autosampler Syringe Pump Module
Precision syringe pump with stepper motor for automated sample injection into liquid chromatography spectrometers (9027.30.40). Delivers microliter accuracy for quantitative analysis. Electrical drive mechanism classifies it under 9027.90.56.30.
Reference Beam Splitter Assembly
Calcium fluoride beam splitter with kinematic mount for dual-beam UV-Vis spectrophotometers under 9027.30.40. Maintains reference beam stability for accurate absorbance readings. Precision optical/electrical part under 9027.90.56.30.
Chopper Wheel Motor Assembly
Precision DC motor with infrared chopper wheel for lock-in amplification in monochromator-based spectrometers (9027.30.40). Modulates light source for signal detection. Electrical modulation component under 9027.90.56.30.