About Benchtop Spectrophotometer
Caltech Instruments Pvt Ltd offers a
Benchtop Spectrophotometer. It is designed for complex samples and large-area surface color measurement. The CES 531/1 Spectrophotometer (Large Aperture) is a high-precision spectrophotometer specially designed for measuring granular, powdered, and textured samples. It adopts 45 annular illumination, is equipped with a 50 mm large measurement aperture, and strictly complies with CIE, ISO, ASTM, and multiple national standards, meeting the requirements of ASTM D6290-19 for particle color testing. The instrument provides a wide measurement area and highly representative data, making it ideal for color measurement of granular samples. It can be widely used for precise color measurement and quality control in industries such as plastics & electronics, paints & inks, textile & apparel dyeing, printing, ceramics, and food. The CES 531/2 Spectrophotometer (Large Aperture) is a high-precision color measurement device specifically designed for complex samples and large-area surface color inspection. It adopts the D/8 (diffuse illumination, 8 viewing) optical geometry, conforming to CIE, ISO, ASTM and multiple national standards. Equipped with a 50 mm measurement aperture and a 120 mm integrating sphere, it achieves large-area uniform sampling, significantly improving the representativeness and stability of color measurement for non-uniform samples (e.g., textured surfaces, granules, fabrics, food, etc.)
Technical Specification.


V. Smart Operation and Data Management -
Suitable for Industrial Applications 7-inch Large Touchscreen Equipped with a TFT true-color capacitive touchscreen, intuitively displaying spectral graph/data, color values, color difference charts, pass/fail results, and color deviation - smooth operation, clear results. Large Storage Capacity Stores up to 1,000 master samples and 30,000 test samples, meeting the data storage and traceability needs of large-scale industrial production. Full-Platform Software Support Comes with professional quality management B software (download from official website), supporting F in-depth data analysis, batch management, remote transmission, and report export, facilitating the establishment of a digital color management system. Multi-Language System Built-in languages include English, Russian, Simplified Chinese, and others, adapting to global application scenarios
FAQs of Benchtop Spectrophotometer:
Q: How does the Benchtop Spectrophotometer ensure precise measurements?
A: The device utilizes LED and Tungsten lamp light sources, with a wavelength accuracy of 0.3nm and spectral bandwidth of 5nm. Combined with a high-resolution photodiode array sensor and both automatic and manual calibration, the instrument consistently delivers precise results across a 400700nm spectral range.
Q: What types of samples can be analyzed using this spectrophotometer?
A: The spectrophotometer is designed to analyze both solid and liquid samples. Its removable sample holder accommodates various sample forms, making it adaptable for use in laboratories, manufacturing quality control, or research environments.
Q: When should I perform calibration on the instrument, and how is it done?
A: Calibration should be performed before initial use or after relocating the device to ensure accuracy. The spectrophotometer offers both automatic and manual calibration, providing flexibility based on user preference and laboratory protocols.
Q: Where can I access the measurement data stored by the spectrophotometer?
A: Measurement data can be stored in the instruments built-in memory and exported via USB. Additionally, results can be printed directly using the supported printer interface, ensuring flexible and easy data management.
Q: What are the benefits of the integrated software features?
A: Built-in color management and graphical analysis software enhance data interpretation and reporting. These features make the device valuable for users needing detailed and precise analysis, facilitating efficient workflow and improved accuracy in results.
Q: How do I connect the spectrophotometer to a computer or printer?
A: The instrument supports connectivity via USB and RS232 interfaces. It is compatible with both Windows and Linux operating systems, and printers can be connected directly through the external interface for convenient on-site documentation.