Of articles of subheading 9027.50.40
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 9027.50.40
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 9027.90.56.50
Electrode Assembly for Conductivity Detector
Platinum electrode cell with electrical leads for conductivity detection in ion chromatography (9027.50.40). Essential for electrolyte analysis. 9027.90.56.50.
HPLC Software Control Board
Printed circuit board with firmware for instrument control in 9027.50.40 HPLC systems. Manages data acquisition and method programming. Electrical part under 9027.90.56.50.
Backpressure Regulator Electrical Module
Electrically adjustable backpressure regulator for consistent flow in 9027.50.40 HPLC. Includes solenoid valve and sensor feedback. 9027.90.56.50 accessory.
Chromatography Column Holder for HPLC Systems
This precision-machined holder secures chromatography columns in high-performance liquid chromatography (HPLC) systems classified under 9027.50.40. It ensures stable alignment during analysis of chemical compositions in pharmaceuticals and research labs. Falls under 9027.90.56.50 as a dedicated accessory for these electrical chromatographic instruments.
Sample Injector Valve for Liquid Chromatographs
High-pressure injection valve for precise sample introduction into HPLC systems of 9027.50.40. Features electrical actuation for automated analysis workflows in environmental testing. Qualifies under 9027.90.56.50 as accessory of electrical chromatographic apparatus.
UV Detector Lamp Module for HPLC
Deuterium/mercury lamp assembly with electrical ballast for UV detection in 9027.50.40 HPLC systems. Provides stable light source for quantitative analysis. 9027.90.56.50 classification for electrical spectroscopic components.
HPLC Binary Pump Check Valve Cartridge
Replaceable check valve cartridge for binary gradient pumps in 9027.50.40 chromatographic systems. Electrically monitored for flow precision in protein analysis. Covered by 9027.90.56.50 as electrical instrument accessory.
Temperature Control Module for HPLC Columns
Peltier-based electrical column oven module for 9027.50.40 HPLC systems, maintaining precise temperatures for chiral separations. Includes sensors and controllers. 9027.90.56.50 as electrical accessory.
Guard Column Cartridge Holder
Quick-change holder for guard columns protecting analytical columns in 9027.50.40 HPLC setups. Electrically interlocked for system safety. Classed under 9027.90.56.50.
HPLC System Control Cable Harness
Custom wiring harness connecting HPLC modules in 9027.50.40 systems for synchronized electrical operation. Includes shielding for EMI protection. 9027.90.56.50 classification.
Fraction Collector Electrical Drive Assembly
Stepper motor drive with electrical controls for automated fraction collection in preparative HPLC (9027.50.40). Positions collection tubes precisely. Fits 9027.90.56.50.
HPLC Pressure Sensor Transducer
Electrical pressure transducer monitoring system pressure in 9027.50.40 HPLC pumps. Provides real-time feedback for safety and accuracy. 9027.90.56.50 part.
HPLC Detector Flow Cell Assembly
Quartz flow cell assembly for UV-Vis detectors in HPLC systems under 9027.50.40, enabling precise light path measurement during chromatographic separation. Critical for detecting analytes in biochemical research. Classified in 9027.90.56.50 as electrical instrument part per chapter rules.
HPLC Autosampler Syringe Holder
Precision syringe gripper mechanism for automated sample handling in 9027.50.40 HPLC autosamplers. Electrically controlled for high-throughput clinical analysis. Fits 9027.90.56.50 as dedicated electrical part.