Detailed Description
Key Features
Enclosed dark box structure for high-contrast UV viewing
Dual UV wavelengths: 254 nm (short-wave) and 365 nm (long-wave)
Wide filter window: 150×80 mm for broader sample coverage
Long lamp life: ≥500 hours for extended use
Compact and lightweight: Only 6 kg, easy to place on any lab bench
Low power consumption: 24W, energy-efficient operation
Technical Specifications
Type: Dark Box UV Analyzer
Model: ZF-20D
UV Wavelengths: 254 nm (short-wave) / 365 nm (long-wave)
Filter Size: 150×80 mm
Power Supply: AC 220V / 50Hz
Power: 24W
Lamp Life: ≥500 hours
Weight: 6 kg
Dimensions: 272×230×250 mm
Compatible Equipment
Gel documentation systems
Electrophoresis tanks
UV transilluminators
Analytical balance for sample preparation
Laboratory extraction and separation tools
Built for Precision and Convenience
The ZF-20D Darkroom-type UV Analyzer is engineered for laboratories requiring accurate and efficient UV detection in a compact footprint. Its dual-wavelength capability and enclosed structure make it ideal for DNA/RNA visualization, protein gel inspection, and trace evidence detection in forensic labs.
Watch Product Demonstrations
Explore real-world performance and applications in our product demo videos. Visit our video library for more insights and demonstrations.
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Shipping Information
We provide worldwide shipping for all laboratory equipment. Every order is carefully packaged to ensure safe delivery. If the item is in stock, it will be shipped within 3–7 business days after payment confirmation. For out-of-stock items, we will inform you of the estimated shipping time based on the specific product.
Shipping Methods: DHL, FedEx, UPS, or sea freight (depending on order size and destination)
Estimated Delivery Time:
Asia: 5–10 business days
Europe & North America: 7–12 business days
South America & Africa: 10–15 business days
Sea freight: subject to actual transit time
Tracking: A tracking number will be provided via email once the shipment has been dispatched.
Customs & Duties: Buyers are responsible for any import taxes or customs duties required by their country or region.
For bulk orders, custom packaging, or special shipping arrangements, please contact our team for personalized assistance at lab@equilrxnlab.com.
Product specifications
Model | ZF7 | ZF-7A | ZF-20D |
---|---|---|---|
Type | Tri-use UV Analyzer | Handheld UV Analyzer | Dark Box UV Analyzer |
Filter Size | 150×50 mm | 150×50 mm | 150×80 mm |
Long-Wave UV | 365 nm | ||
Short-Wave UV | 254 nm | ||
Power Supply | AC 220V/50Hz | ||
Power | 16W | 12W | 24W |
Weight | 4 kg | 1 kg | 6 kg |
Dimensions | 245×220×300 mm | 260×72×105 mm | 272×230×250 mm |
Lamp Life | ≥500H |
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Application Scenarios
Application Scenarios for the Darkroom-type UV Analyzer
The Darkroom-type UV Analyzer is an essential tool in various laboratory settings where ultraviolet light is used for sample analysis. Its dual-wavelength (254/365 nm) design and enclosed viewing area make it highly suitable for the following applications:
Molecular Biology Research: Visualizing nucleic acid bands (DNA/RNA) after gel electrophoresis using UV-sensitive dyes like ethidium bromide or SYBR Safe.
Biochemical Analysis: Detecting protein interactions and enzyme activities through fluorescent tagging techniques.
Pharmaceutical Testing: Examining compound purity and contamination using UV fluorescence in drug development and quality control.
Forensic Science: Analyzing biological stains, fibers, and chemical residues that fluoresce under UV light.
Education and Training: Demonstrating UV fluorescence principles in university or laboratory training programs.
Material and Polymer Research: Inspecting surface properties and additives in plastics or coatings under UV exposure.
Whether in research, diagnostics, or teaching, this Darkroom-type UV Analyzer offers a reliable and safe method for fluorescence detection under controlled UV illumination.

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User-friendly design
Designed with simplicity, the switches are easy to understand and operate. The transparent glass allows for easy observation of items placed inside.
180×80MM Observation Glass
Clear, wide panel for easy and precise monitoring.


Lower power consumption
less heat generation. Supports long-term use, can be used continuously for 600 hours.
Control panel
Rocker switch, durable and long-lasting. Simple operation, convenient and fast.
