Photometers
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: > Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared): > Other: > Electrical > Photometers
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 9027.50.40.50
Colorimeter Digital Photometer
A benchtop electrical colorimeter photometer that measures color coordinates (CIE Lab) using tristimulus optical sensors. Falls under HTS 9027.50.4050 as it analyzes light for physical color properties via electrical photometry. Widely used in paint, textile, and food quality control.
Industrial Exposure Meter Photometer
Rugged electrical photometer serving as exposure meter for photographic film/process control in printing. Measures light quantity via optical sensors for timing exposures, HTS 9027.50.4050. Used in offset lithography and screen printing.
Luxmeter Digital Photometer
A handheld digital luxmeter designed to measure illuminance in lux using optical radiation sensors and electrical processing. It falls under HTS 9027.50.4050 as an electrical photometer for quantifying visible light levels in various environments. Commonly used in lighting design and workplace safety assessments.
UV Intensity Photometer Meter
A portable electrical photometer measuring ultraviolet light intensity for applications like UV curing and sterilization monitoring. Classified under HTS 9027.50.4050 due to its use of optical radiations (UV spectrum) with electrical detection. Essential for quality control in printing and medical device manufacturing.
Infrared Radiometer Photometer
An electrical photometer functioning as an IR radiometer to measure infrared radiation flux in industrial thermal processes. It uses optical radiations in the infrared spectrum with electronic signal processing, fitting HTS 9027.50.4050. Used for non-contact temperature monitoring and energy audits.
Laboratory Luminance Photometer
Precision electrical photometer measuring luminance (cd/m²) for display calibration and lighting research using telephoto optics. Classified in HTS 9027.50.4050 for electrical optical radiation instruments checking light quantities. Ideal for OLED/LCD panel testing.
Flame Photometer for Sodium Analysis
Electrical flame emission photometer measuring alkali metal concentrations (Na, K) in solutions via optical line spectra. HTS 9027.50.4050 covers this chemical analysis apparatus using optical radiations electrically processed. Standard in water testing and clinical chemistry.
Portable Integrating Sphere Photometer
Battery-powered photometer with integrating sphere attachment for total luminous flux measurement of light sources. Electrical processing of diffused optical radiations qualifies for HTS 9027.50.4050. Used for LED bulb efficacy testing.
Spectroradiometer Electrical Photometer
High-resolution electrical photometer combining spectroradiometry for full-spectrum light analysis (380-780nm). Uses grating optics and CCD array for optical radiation measurement, under HTS 9027.50.4050. Applied in solar simulation and film photography.
Goniophotometer Electrical System
Automated electrical photometer goniophotometer measuring angular light distribution for luminaire certification. Uses rotating optics and electrical detectors for spatial photometry, HTS 9027.50.4050. Required for IESNA LM-79 testing.