Shanghai Jingke UV765 UV-Vis Spectrophotometer
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | UV765 |
| Price | USD 350 (FOB Shanghai) |
| Product Category | Spectroscopy |
| Usage Duration | Refurbished Unit (1–3 years operational history) |
| Warranty | 6 months limited parts & labor |
Overview
The Shanghai Jingke UV765 UV-Vis Spectrophotometer is a benchtop double-beam scanning spectrophotometer engineered for routine quantitative and qualitative analysis in academic laboratories, quality control environments, and industrial R&D settings. Based on the principle of absorption spectroscopy across the ultraviolet and visible spectral range (190–1100 nm), the instrument employs a holographic grating monochromator, tungsten-halogen and deuterium lamp sources, and a silicon photodiode detector to deliver stable baseline performance and high photometric reproducibility. Designed in accordance with GB/T 21186–2007 (Chinese national standard equivalent to ISO 14785:2001 for spectrophotometer performance verification), the UV765 supports absorbance, transmittance, and concentration measurement modes with wavelength accuracy ±1.0 nm and photometric accuracy ±0.002 A at 1.0 A (certified via NIST-traceable neutral density filters). Its optical architecture minimizes stray light (<0.05% at 220 nm), ensuring reliable quantification of low-concentration analytes in pharmaceutical, environmental, and biochemical applications.
Key Features
- Double-beam optical design with real-time reference beam correction for enhanced stability against source drift and environmental fluctuations
- Wavelength scanning range: 190–1100 nm; resolution: 1.0 nm (fixed slit); scan speed selectable from 60–600 nm/min
- Photometric range: –0.3–3.0 A (Absorbance), 0–200% T (Transmittance), 0–9999 C (Concentration)
- Integrated 8-position automatic sample holder (standard); optional 16-position or flow-cell accessories available
- Onboard data storage for up to 200 spectra and 100 calibration curves; USB interface for external data export
- Pre-aligned optical path and factory-calibrated wavelength/photometric scales reduce setup time and operator dependency
- Compliant with GLP documentation requirements: timestamped measurement logs, user ID tagging, and audit-ready operation records
Sample Compatibility & Compliance
The UV765 accommodates standard 10 mm rectangular quartz or glass cuvettes (pathlength 1–50 mm, including micro-volume adapters), as well as fixed-pathlength flow cells for continuous monitoring. It supports liquid-phase analysis of organic dyes, nucleic acids, proteins, metal complexes, and pharmaceutical intermediates per USP , EP 2.2.25, and ASTM E275–22. All firmware and operational protocols adhere to ISO/IEC 17025:2017 clause 6.4.7 (equipment verification) and are compatible with laboratory information management systems (LIMS) via ASCII-formatted output. The unit undergoes full functional refurbishment—including lamp replacement, optical alignment verification, and baseline noise validation—prior to shipment, meeting internal QC criteria aligned with JJG 178–2015 (Chinese metrological verification regulation for spectrophotometers).
Software & Data Management
The instrument operates natively via its embedded LCD interface and keypad, eliminating dependency on external PCs for basic operation. Optional PC-based software (UVWin v5.0, Windows 10/11 compatible) enables advanced spectral processing: peak identification, derivative spectroscopy, multi-wavelength kinetics, and Beer-Lambert linear regression with residual error reporting. All data files are saved in .txt and .csv formats for traceability and third-party statistical analysis (e.g., JMP, OriginLab). Audit trail functionality records user logins, method changes, calibration events, and measurement timestamps—fully compliant with FDA 21 CFR Part 11 requirements when deployed with electronic signature-enabled configurations.
Applications
- Pharmaceutical QA/QC: Assay of active pharmaceutical ingredients (APIs) per USP monographs using validated UV methods
- Environmental testing: Nitrate, phosphate, and COD determination in wastewater per EPA Method 353.2 and ISO 6060
- Food & beverage: Quantification of preservatives (e.g., benzoic acid, sorbic acid), colorants, and antioxidant capacity (FRAP/ABTS assays)
- Academic teaching: Fundamentals of electronic transitions, molar absorptivity determination, and enzyme kinetics (e.g., LDH, ALP)
- Materials science: Bandgap estimation of semiconductor nanoparticles via Tauc plot analysis
FAQ
Is this unit supplied with calibration certificates?
Yes—each refurbished UV765 includes a factory-issued Certificate of Conformance and a traceable wavelength/photometric verification report generated using NIST SRM 930e filters.
What consumables are included with purchase?
Standard delivery includes one pair of 10 mm quartz cuvettes, a new deuterium lamp, and a user manual in English.
Can the instrument be integrated into a networked lab environment?
While the base model lacks Ethernet connectivity, USB-to-Ethernet adapters and custom LabVIEW drivers are supported for centralized instrument monitoring.
Does the 6-month warranty cover lamp replacement?
Yes—the warranty covers all optomechanical components, including lamps, detectors, and drive motors, subject to normal usage conditions.
Is technical support available post-purchase?
Remote troubleshooting, method development consultation, and firmware updates are provided free of charge during warranty period by certified application engineers.
