Of articles of subheading 9027.50.10
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 9027.50.10
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 9027.90.56.40
Chromatography Column Replacement Parts
Precision-engineered replacement columns and fittings specifically designed for High Performance Liquid Chromatography (HPLC) systems classified under 9027.50.10. These parts ensure accurate separation and analysis of chemical compounds in laboratory settings. They fall under HTS 9027.90.56.40 as electrical parts and accessories of subheading 9027.50.10 instruments.
HPLC Detector Flow Cell Assemblies
Quartz flow cells with integrated electrical sensors for UV-Vis detectors in HPLC systems of subheading 9027.50.10. These components measure light absorbance during chromatographic analysis with high precision. Classified under 9027.90.56.40 as electrical accessories essential for chemical analysis functionality.
Electrode Cartridges for pH Chromatography Modules
Replaceable electrode cartridges with reference and measuring electrodes for inline pH monitoring in HPLC systems (9027.50.10). These electrical components provide real-time conductivity and pH data during chemical separation processes. Falls under 9027.90.56.40 as specialized electrical parts for physical/chemical analysis apparatus.
Temperature Control Sensors for HPLC Columns
Thermocouple sensor arrays with electrical interfaces for precise temperature regulation of HPLC columns in 9027.50.10 systems. These maintain optimal separation conditions during chemical analysis. Classified as 9027.90.56.40 electrical parts essential to instrument performance.
Conductivity Cell Modules for HPLC Detectors
Platinum electrode conductivity cells with electronic signal conditioning for HPLC conductivity detectors (9027.50.10). Used for ionic compound detection in chemical analysis workflows. HTS 9027.90.56.40 covers these electrical detector accessories.
HPLC Autosampler Syringe Pumps
Precision electrical syringe drive mechanisms for automated sample injection in 9027.50.10 HPLC autosamplers. These stepper motor-driven pumps ensure reproducible sample volumes for accurate analysis. Classified under 9027.90.56.40 as electrical instrument parts.
UV Lamp Housings for HPLC Detectors
Electrical housings with deuterium lamp ballasts and igniters for HPLC UV detectors of subheading 9027.50.10. Provide stable light sources for absorbance measurements in chromatography. HTS 9027.90.56.40 designation for these electrical light source accessories.
Control Circuit Boards for HPLC Systems
Printed circuit boards with microprocessors for pump control, data acquisition, and system integration in 9027.50.10 HPLC instruments. These electrical boards manage analytical operations. Classified under 9027.90.56.40 as essential electrical parts.
Pressure Transducer Modules for HPLC Pumps
Electrical pressure sensors with 4-20mA output for monitoring HPLC pump performance in 9027.50.10 systems. Critical for detecting system pressure anomalies during analysis. HTS 9027.90.56.40 covers these electrical monitoring accessories.
Fraction Collector Electrical Drives
Stepper motor drive assemblies for automated fraction collection racks in HPLC systems (9027.50.10). Enable precise sample collection based on detector signals. Classified as 9027.90.56.40 electrical positioning accessories.