Oushisheng UV-Vis-1000 Online UV-Vis Spectrophotometric Detector
| Brand | Oushisheng |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | UV-Vis-1000 |
| Instrument Type | Online Chromatographic UV-Vis Detector |
| Wavelength Range | 200–1000 nm |
| Light Source | Pulsed Xenon Lamp |
| Detector Core | Miniature Fiber-Optic CCD Spectrometer |
| Optical Configuration | Transmission or Reflectance (via Optional Fiber Probe) |
| Typical Path Length | Configurable Flow Cell (Standard: 10 mm optical path) |
| Signal-to-Noise Ratio | ≥1000:1 (at 500 nm, 1 s integration) |
Overview
The Oushisheng UV-Vis-1000 Online UV-Vis Spectrophotometric Detector is an engineered solution for real-time, non-destructive concentration monitoring in continuous flow chemical processes and liquid-phase chromatographic systems. Operating on the fundamental principle of the Lambert-Beer law, the detector quantifies analyte concentration by measuring wavelength-dependent absorbance across a broad spectral window (200–1000 nm). Its core optical architecture integrates a pulsed xenon light source with a miniature fiber-optic CCD spectrometer—enabling high-stability spectral acquisition without thermal drift or lamp aging artifacts common in deuterium/tungsten halogen systems. Designed specifically for integration into flow chemistry reactors, process analytical technology (PAT) workflows, and preparative/analytical HPLC/UHPLC lines, the UV-Vis-1000 delivers reproducible photometric data under dynamic hydraulic conditions, supporting both transmission-mode (flow cell) and reflectance-mode (fiber-optic probe) configurations.
Key Features
- Pulsed xenon lamp with >1 billion pulse lifetime—ensures stable spectral output over ≥5 years of continuous operation without intensity decay or spectral shift
- Integrated miniature fiber-optic spectrometer featuring a linear CCD array and fixed-grating dispersion optics—optimized for rapid spectral acquisition (≤10 ms per full spectrum) and low thermal noise
- Wide 200–1000 nm spectral coverage—supports detection of aromatic compounds (e.g., benzene derivatives), transition metal complexes, dyes, nitroaromatics, and other chromophores with diverse λmax values
- Modular flow cell design with standard 10 mm optical path; optional custom path lengths (1–50 mm) and reflective fiber probes for opaque or viscous media
- Low-power consumption (<15 W typical system draw)—suitable for embedded deployment in compact reactor control cabinets or mobile PAT platforms
- Digital I/O interface (TTL/RS-232) for synchronization with peristaltic pumps, fraction collectors, or PLC-based process controllers
Sample Compatibility & Compliance
The UV-Vis-1000 is compatible with aqueous, organic, and mixed-solvent streams commonly encountered in pharmaceutical synthesis, fine chemical manufacturing, and catalytic reaction screening. It accommodates flow rates from 0.01 to 10 mL/min and withstands backpressures up to 10 bar when paired with stainless steel or quartz flow cells. All wetted materials comply with USP Class VI biocompatibility standards; quartz flow cells meet ASTM E438 Type I Class A specifications for optical homogeneity. The instrument supports audit-trail-enabled operation when integrated with compliant software platforms adhering to FDA 21 CFR Part 11 requirements—including electronic signatures, user access controls, and immutable data logging.
Software & Data Management
The detector operates via Oushisheng’s proprietary SpectraLink™ SDK (Windows/Linux), providing native API support for LabVIEW, Python (PyVISA), MATLAB, and C/C++. Raw spectral data (intensity vs. wavelength) is output in IEEE 754-compliant float32 format at user-defined acquisition rates (1–100 Hz). Time-resolved absorbance tracking (At at λ1, λ2, etc.) can be exported in CSV or HDF5 formats, with metadata including timestamp, integration time, lamp status, and temperature compensation flags. Optional firmware upgrade enables GLP/GMP-aligned operation: all parameter changes are logged with operator ID, timestamp, and reason-for-change fields; spectral baselines are auto-recorded before each measurement cycle.
Applications
- Real-time monitoring of reduction reactions (e.g., nitro-to-amine conversion) and colorimetric assays (e.g., Fe2+/1,10-phenanthroline complex formation)
- In-line quantification of aromatic intermediates in continuous-flow API synthesis (e.g., Suzuki couplings, diazotizations)
- Concentration feedback control in automated reaction optimization platforms (e.g., ChemOS, AiZynthFinder-integrated reactors)
- UV-Vis spectral fingerprinting of eluent fractions in preparative chromatography for purity assessment
- Stability-indicating monitoring of photolabile compounds during storage or processing
FAQ
What is the minimum detectable absorbance change (ΔA) under standard operating conditions?
Typical resolution is 0.002 AU (at 500 nm, 1 s integration, 10 mm path length), limited primarily by photon shot noise and CCD readout variance.
Can the UV-Vis-1000 be calibrated traceably to NIST standards?
Yes—factory calibration uses NIST-traceable neutral density filters and holmium oxide reference solution (SRM 2034); end-user recalibration protocols support ISO/IEC 17025-compliant verification.
Is the detector compatible with high-pressure UHPLC systems?
When equipped with a stainless steel flow cell rated to 600 bar, the UV-Vis-1000 interfaces directly with UHPLC systems; standard quartz cells are rated to 10 bar.
Does the system support multi-wavelength kinetic profiling?
Yes—users may define up to 16 independent wavelength channels for simultaneous time-series absorbance tracking, with configurable averaging and outlier rejection algorithms.
How is temperature stability managed during extended acquisitions?
The spectrometer housing includes passive thermal mass design and optional Peltier stabilization (±0.1 °C), minimizing wavelength drift to <0.05 nm/h over 8-hour runs.
