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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:
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:
Combined with a double beam optical system, it ensures real-time reference correction, improving accuracy and minimizing environmental interference.
Designed for long-term laboratory reliability, this spectrophotometer integrates:
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:
The PC software-controlled system offers:
Its modular design also ensures:
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 |
Instrava OEM/ODM
Reliable Instruments. Solutions That Fit Your Application.
Instrava is focused on delivering reliable industrial solutions through carefully curated products, application-driven optimization, and flexible customization. We select proven instruments from trusted manufacturers to ensure consistent quality, optimize solutions based on real working conditions to solve practical challenges, and provide tailored configurations to meet specific application needs.
By combining selection expertise with application understanding, Instrava helps customers reduce risk, improve efficiency, and achieve dependable results in complex industrial environments.

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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:
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:
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:
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:
What accessories can expand the application of this UV-Vis spectrophotometer?
The instrument supports multiple accessories, including:
These options extend its use to kinetics studies, multi-sample analysis, and solid sample measurement.
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