Dual-beam UV-Vis Spectrophotometer

This instrument is designed for method development, precision quantification, and continuous measurement in research laboratories, pharmaceutical analysis, and third-party testing. It is suitable for analytical tasks with higher requirements for stray light, photometric error, and baseline stability. It employs a dual-beam C-T optical system that corrects for light source fluctuations via a reference beam and is equipped with a high-sensitivity PMT (photomultiplier tube), with a wavelength range of 190–900 nm. The maximum permissible error for transmittance is ±0.2%T, stray light is ≤0.03%T, and baseline flatness is ±0.0008 A. It features a 10.1-inch color capacitive touchscreen that supports spectral scanning, quantitative analysis, time-resolved scanning, and protein/DNA assays. The accompanying PC host software provides multi-level access permissions, audit trails, and comprehensive data management capabilities.

Suitable for UV-visible spectrophotometric analysis in research laboratories, pharmaceutical companies, third-party testing institutions, and quality control laboratories where high photometric accuracy, stray light control, and baseline stability are required. The dual-beam reference measurement configuration, combined with a PMT (photomultiplier tube), is well-suited for method development, precision quantification, continuous measurement, spectral scanning, and time-resolved scanning. It can be applied to tasks such as the content determination of drugs and pharmaceutical preparations, the analysis of fine chemicals and related solution systems, the testing of environmental and water quality indicators, as well as protein and DNA assays. The dual-beam configuration is particularly suitable for measurements requiring reference correction, long-term continuous data acquisition, or those that are sensitive to fluctuations in the light source. Specific detection capabilities should be determined based on the results confirmed by the relevant pharmacopoeia, standard methods, and laboratory procedures.

• Dual-beam reference measurement system: Utilizes a dual-beam C-T optical configuration and a 1200 lines/mm holographic grating. By performing measurements and reference corrections using both the sample beam and the reference beam, it minimizes the impact of light source fluctuations on measurements and is suitable for continuous measurement and spectral scanning.

• PMT Detection and Photometric Performance: Equipped with a high-sensitivity PMT (photomultiplier tube) featuring a built-in 200-step automatic gain control function, providing a wider dynamic range and higher signal-to-noise ratio. Maximum permissible error for transmittance is ±0.2%T (0–100%T); transmittance repeatability is ≤0.1%T; stray light is ≤0.03%T; baseline flatness is ±0.0008 A.

• UV-Vis Band and 10.1-Inch Touchscreen: Automatic switching between deuterium and tungsten lamps, with a wavelength range of 190–900 nm. Equipped with a color capacitive touchscreen with a resolution of 1024×600, supporting both Chinese and English interfaces; the main unit can independently complete parameter settings, measurements, and result viewing.

• Multi-mode Analysis and Biological Sample Measurement: Supports photometric measurement, multi-wavelength measurement, spectral scanning, quantitative measurement, time-resolved scanning, and protein/DNA quantification. Equipped with automatic wavelength calibration, baseline correction, peak detection, and standard curve fitting functions, it can perform routine photometric analysis and record absorbance changes over time.

• Standalone and PC Dual-Operation Modes: The main unit can independently perform parameter setup, measurements, and result viewing, or it can be connected to a PC host for instrument control and data processing.

• Full Data Export and Report Generation: In standalone mode, the unit supports exporting all measurement data and test reports via a USB flash drive, with support for A4-format PDF reports. The PC host supports storage of all measurement data, spectrum export, test report generation, and custom reports, facilitating the archiving of experimental data and verification of results.

• Audit Trail and Data Integrity Management: The PC host supports tiered user, role, and function-based permission management, with audit logs recording operations such as logins, parameter settings, method changes, and report exports. Combined with the raw data locking feature, this ensures a record of operations and data traceability, meeting laboratory audit management requirements.

• Spectral Bandwidth Configurable on Demand: The standard configuration features a 2 nm spectral bandwidth, with optional specifications of 1 nm, 1.8 nm, and 4 nm available; users can select the appropriate configuration based on the bandwidth required by the measurement method.

• Multi-Pathlength and Quadruple Holder Expansion: The standard configuration includes a 10 mm standard cuvette holder; optional adjustable-pathlength holders are available to accommodate pathlengths ranging from 10 to 100 mm. Additionally, an optional manual push-pull quadruple holder is available to facilitate sequential switching between multiple cuvettes, accommodating different pathlengths and sample loading arrangements.

• No Calibration Required After Light Source Replacement and Maintenance Management: No optical path recalibration is required after replacing the light source. The system supports recording of light source usage time, making it easy to track usage and schedule maintenance. The main unit supports software updates via Wi-Fi.