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.

Top view of a double beam UV-visible spectrophotometer, showing the internal sample holder and detector layout.
Side view of a double beam UV-visible spectrophotometer, showing the instrument's precise structure and optical path design.

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  

ParameterSpecification
Optical SystemDouble Beam
DetectorPhotomultiplier Tube (PMT)
Wavelength Range190–900 nm
Spectral Bandwidth0.1–5 nm (0.1 nm interval, continuously adjustable)
Light SourceTungsten 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 ModePC Software Controlled
Power SupplyAC 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.

symbolizing trust and the beginning of a long-term partnership

Related Product Recommendations  

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.

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.

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.

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.

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

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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Focused on Industrial Applications

We specialize in industrial analysis and detection, with a clear understanding of real-world operating environments and requirements.

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Every instrument is evaluated based on performance, stability, and application suitability—not just specifications or pricing.

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Our recommendations are grounded in application understanding, helping customers avoid common issues and achieve reliable results.

Instrava is built to reduce uncertainty—so every decision you make is clearer, safer, and more reliable.

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