Double Beam UV Visible Spectrophotometer with PMT Detector-Ultra-High Sensitivity
High-Sensitivity Detection with PMT for Trace-Level Analysis
This double beam UV visible spectrophotometer with PMT detector is engineered for ultra-sensitive and high-precision measurements, making it ideal for low-concentration sample detection and weak signal analysis.
Equipped with a Photomultiplier Tube (PMT), the system offers:
- Exceptional sensitivity for trace analysis
- Fast response for real-time measurements
- Superior performance in pharmaceutical analysis, environmental testing, and biochemical research
This makes it particularly suitable for detecting substances with low absorbance or weak radiation energy, where standard detectors fall short.
Optical Analysis Description
Flexible Spectral Control with Continuous Adjustable Bandwidth
The instrument features a continuously adjustable spectral bandwidth (0.1–5 nm) with 0.1 nm intervals, providing unmatched flexibility for diverse analytical requirements.
This is especially critical for:
- Sharp absorption peak analysis (e.g., penicillin sodium, penicillin potassium)
- High-resolution spectral scanning
- Complex compound identification
Combined with a double beam optical system, it ensures real-time reference correction, improving accuracy and minimizing environmental interference.
3. Stable Optical Performance & Intelligent Calibration System
Designed for long-term laboratory reliability, this spectrophotometer integrates:
- Mercury lamp for automatic wavelength calibration
- Deuterium + tungsten lamps for stable UV-Vis performance
- Real-time dark current correction
- Premium optical components for enhanced repeatability
With low stray light (≤0.005%T) and high photometric stability, the instrument guarantees consistent and reproducible results in demanding laboratory environments.
Modular Design & Expanded Application Capability
A large sample chamber supports a wide range of accessories, enabling multi-functional applications:
- Auto 8-cell holder
- Autosampler
- Thermostatic cell holder
- Integrating sphere & reflection accessories
The PC software-controlled system offers:
- Intuitive user interface
- Data analysis & report generation
- Simplified operation for laboratory technicians
Its modular design also ensures:
- Easy maintenance
- Quick lamp replacement without optical alignment
- Reduced long-term operational costs
Optical Analysis Parameter
| Parameter | Specification |
|---|---|
| Optical System | Double Beam |
| Detector | Photomultiplier Tube (PMT) |
| Wavelength Range | 190–900 nm |
| Spectral Bandwidth | 0.1–5 nm (0.1 nm interval, continuously adjustable) |
| Light Source | Tungsten Lamp + Deuterium Lamp + Mercury Lamp |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | ≤0.1 nm |
| Photometric Accuracy | ±0.3%T |
| Stability | ≤0.0001 A/h |
| Stray Light | ≤0.005%T @ 220 nm & 360 nm |
| Control Mode | PC Software Controlled |
| Power Supply | AC 110/220V, 50/60Hz |
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What is a double beam UV-Vis spectrophotometer with PMT detector used for?
A double beam UV-Vis spectrophotometer with PMT detector is used for high-sensitivity analysis of low-concentration samples, including applications in pharmaceutical testing, environmental monitoring, and biochemical research. The PMT detector enables accurate detection of weak absorbance signals.
Why choose a PMT detector over a photodiode detector?
A PMT detector (Photomultiplier Tube) provides:
- Higher sensitivity for trace detection
- Faster signal response
- Better performance in low-light or weak signal conditions
This makes it ideal for advanced laboratory applications requiring ultra-low detection limits.
What is the advantage of continuous adjustable bandwidth (0.1–5 nm)?
Continuous adjustable bandwidth allows users to:
- Optimize resolution for sharp spectral peaks
- Improve accuracy in complex sample analysis
- Adapt to multiple testing standards and methods
It is particularly beneficial in pharmaceutical quality control and chemical analysis.
How does a double beam spectrophotometer improve accuracy?
A double beam system splits light into sample and reference beams, enabling:
- Real-time baseline correction
- Reduced environmental interference
- Improved measurement stability
This ensures higher precision compared to single beam spectrophotometers.
Is this spectrophotometer suitable for pharmaceutical analysis?
Yes. With high wavelength accuracy (±0.3 nm), low stray light, and PMT sensitivity, it is highly suitable for:
- Drug quality control (e.g., penicillin analysis)
- Compliance with strict analytical standards
- Trace impurity detection
What accessories can expand the application of this UV-Vis spectrophotometer?
The instrument supports multiple accessories, including:
- Auto multi-cell holders
- Autosamplers
- Thermostatic cell holders
- Integrating spheres
These options extend its use to kinetics studies, multi-sample analysis, and solid sample measurement.
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