Of articles of subheading 9027.10.20
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: > Other > Of articles of subheading 9027.10.20
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 9027.90.59.10
Gas Chromatograph Sample Injector Valve
Precision valve component designed specifically for gas chromatographs classified under HTS 9027.10.20, enabling accurate sample introduction into the analytical system. This part ensures leak-free operation and precise control of gas flow during chemical analysis. It falls under 9027.90.59.10 as an electrical accessory part for these instruments.
Spectrophotometer Quartz Cuvette Holder
Electromechanical holder for positioning quartz cuvettes in UV-Vis spectrophotometers of HTS 9027.10.20, featuring motorized alignment for precise optical path control. Critical for maintaining sample integrity during absorbance measurements. Classified as electrical accessory under 9027.90.59.10.
pH Meter Electrode Amplifier Module
Signal conditioning amplifier specifically engineered for pH electrodes in gas/liquid analysis systems under 9027.10.20, converting high-impedance signals to low-noise outputs. Essential for accurate ion concentration measurements in chemical analysis. Electrical part per 9027.90.59.10.
Turbidity Meter Photodiode Sensor Assembly
Integrated photodiode array with signal processing electronics for turbidity meters analyzing suspended solids in gas streams (9027.10.20). Provides real-time light scattering measurements for particle concentration. Electrical sensor classified under 9027.90.59.10.
Flame Ionization Detector Filament Assembly
Replaceable platinum filament with temperature control electronics for FID detectors in gas chromatographs (9027.10.20). Critical for hydrocarbon detection through ionization measurement. Electrical component under 9027.90.59.10.
Refractometer Temperature Compensation Sensor
NTC thermistor sensor with signal conditioning circuitry for automatic temperature compensation in digital refractometers (9027.10.20). Ensures accurate refractive index readings across temperature ranges. Electrical accessory part per 9027.90.59.10.
Polarimeter Optical Cell Alignment Motor
Precision stepper motor with encoder feedback for automatic alignment of optical cells in polarimeters measuring optical rotation (9027.10.20). Ensures accurate path length positioning. Electrical drive component classified under 9027.90.59.10.
Smoke Analyzer Photometric Module
Integrated LED/photodetector module with analog-to-digital conversion for smoke density analyzers (9027.10.20). Measures particulate matter via light obscuration principle. Electrical optical sensor under 9027.90.59.10.
Viscometer Torque Sensor Electronics
Strain gauge amplifier and A/D converter board for rotational viscometers measuring fluid viscosity (9027.10.20). Converts mechanical torque to digital viscosity readings. Electrical measurement circuitry per 9027.90.59.10.
Surface Tension Tensiometer Balance Interface
Digital interface module connecting microbalance to tensiometer software for Wilhelmy plate surface tension measurement (9027.10.20). Provides real-time force data acquisition. Electrical data acquisition component under 9027.90.59.10.