Transilluminator
Transilluminators are used for fluorescence-based illumination of transparent materials to analyze nucleic acid gels. They enable visualization using UV light and fluorescent dyes.
Product
Transilluminator
Transilluminators are used for fluorescence-based illumination of transparent materials to analyze nucleic acid gels. They enable visualization using UV light and fluorescent dyes.
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Guide and selection support
Transilluminators are primarily used in molecular biology to detect DNA or RNA in gel electrophoresis applications. The devices illuminate with UV or visible light, thereby making fluorescence-labeled nucleic acids visible.
Key selection criteria include the illumination principle, the homogeneity of the lighting, compatibility with different dyes, and ergonomic design. Size and energy consumption are also important considerations.
LabFinder assists in selecting transilluminators with clear descriptions, usage instructions, and comparison criteria to make laboratory procurement more efficient.
Applications and Benefits
Transilluminators are mainly used in molecular biology and biochemistry to visualize nucleic acid gels, such as those used in gel electrophoresis procedures. By exciting fluorescent dyes like ethidium bromide or acridine orange, double-stranded nucleic acids emit light, enabling qualitative and in some cases quantitative analysis. These devices are also used for image documentation and ensure reproducible results in laboratory analysis.
Selection Criteria
Several factors are important when choosing a transilluminator: the wavelength of the UV or visible light source must match the fluorescent dyes used. Uniform illumination of the gel surface is essential for consistent visibility and documentation. Additionally, size, handling, energy consumption, and potential filter options should be considered. Compatibility with existing photo documentation equipment may also be relevant.
Variants and Measurement Principles
Transilluminators mainly differ by the type of light source used: common variants include UV transilluminators as well as devices with blue light or white LEDs. UV transilluminators illuminate the gel with UV light, which is absorbed by the dye and triggers fluorescence. Devices with blue LEDs are gentler on both the material under investigation and the user. The choice of device depends on the combination of dyes and the user's needs.
Calibration and Maintenance
Regular maintenance includes cleaning the light source and viewing window to prevent contamination, which can impair illumination. The operating life of the lamps should be monitored and replaced if necessary, as reduced brightness diminishes detection performance. Systematic checks of light intensity and filter function help maintain consistent quality.
Limitations of Application
Transilluminators are suited for visualizing transparent and fluorescence-labeled samples. They are not suitable for direct concentration determination without additional evaluation systems. The use of UV light requires careful handling due to possible health effects, so appropriate safety measures are recommended. Furthermore, not all fluorescent dyes can be optimally visualized with every device.
Search Terms and Related Terms
Synonyms and related terms include UV transilluminator, gel transilluminator, fluorescence transilluminator, nucleic acid transilluminator, DNA transilluminator, UV light box, gel electrophoresis illuminator, UV analysis device, DNA gel viewer, and fluorescence gel viewer.
Also known as
DNA gel viewer
DNA transilluminator
fluorescence transilluminator
gel electrophoresis illuminator
gel lighting
gel transilluminator
nucleic acid transilluminator
UV analysis device
UV light box
UV transilluminator
Related categories
Analytical instruments Clinical diagnostics - General
DNA Fragment Size Markers
DNA Gel Extraction Kits
Electrophoresis System
Fluorescence measurement
Fluorescence Spectrophotometer
Gel Documentation Systems
Pressure measuring device
Protein Gel staining system
UV Crosslinkers
Western Blot Imaging Systems
Suitable brands
Frequently asked questions
How does a transilluminator work?
A transilluminator illuminates fluorescence-labeled samples with UV or visible light, making nucleic acids in gel matrices visible.
What types of transilluminators are available?
There are mainly UV-based transilluminators as well as devices with blue or white LED light, each stimulating different fluorescent dyes.
What should you consider when selecting a transilluminator?
Key aspects include the illumination principle, wavelength, lighting quality, compatibility with dyes, and ergonomic features of the device.
Which fluorescent dyes can be detected with transilluminators?
Commonly used dyes are ethidium bromide and acridine orange, which respond well to UV light. However, dyes requiring other wavelengths can also be used.
What are the limitations of transilluminators in laboratory practice?
They are not suitable for quantitative analyses without supplementary systems and may pose risks due to UV radiation if not handled properly.
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