The transilluminator for gels basically works by emitting ultraviolet (UV) or blue light. DNA or protein samples, which are normally invisible to the naked eye, are stained with a fluorescent dye that absorbs the light emitted by the transilluminator. When light passes through the samples, it causes the fluorescent dyes to emit light at a different wavelength, which makes the DNA or protein bands visible.

UV light has been commonly used because of its effectiveness. However, it has its disadvantage: it can damage DNA samples. On the other hand, blue light is considered a safer alternative that not only protects the samples, but is also less harmful to human eyes.


At Kalstein you can find the ideal Transilluminators for your Laboratory

There are an infinite number of models, so it's normal that you don't know which Transilluminator to buy to meet your needs. At Kalstein, we evaluate them so you can find what you are looking for.

Portable UV Transilluminator YR06032

Small size, simple operation.
Two kinds of UV wavelength, observe applicable to different gel...


UV Transilluminator YR06030

The high transparent UV protective screen, can be opened to any angle, safe operation, convenient. Using the UV filter glass...


UV Transilluminator YR06031

No need for darkroom, can be use for all-weather.With the operation of export for cuting the gel...


Our best-selling Transilluminator

A transilluminator consists of an ultraviolet light source that illuminates the gel from below. The gels, typically agarose or acrylamide, contain DNA or RNA fragments stained with a fluorescent dye. When these gels are exposed to ultraviolet (UV) light, the fluorescent dyes are excited and emit light at a different wavelength, usually in the visible range. This fluorescence effect produces bright bands representing DNA or RNA fragments, which can be visualized and photographed for further analysis. 

  • The high transparent UV protective screen, can be opened to any angle, safe operation, convenient.
  • Using the UV filter glass, quartz ultraviolet lamp, long service life, light uniform.

Catalog of Transilluminator models on offer


Guides to become a Transilluminator expert

Transilluminator equipment are indispensable products in a laboratory, we provide you with guides and recommendations for a better use, so that you can work as an expert.

Understanding the practical applications of the gel Transilluminator

The scientific field, with its constant evolution, relies heavily on advanced laboratory technology to support innovative research and...

Improving your lab efficiency with the use of a gel Transilluminator

Transilluminators, also known as darkfield illuminators, are laboratory equipment that have the potential to significantly change the...

Everything you need to know about Transilluminator for gels

In the vast spectrum of scientific research, there is a need for advanced tools to facilitate intricate laboratory processes. Among these...

How does a Transilluminator for Gels work?

Molecular biology is constantly evolving, and along with it, the technological tools that allow scientists to advance in this area of study. One of them is the gel transilluminator, a crucial machine in laboratories around the world...

Frequently asked questions from our customers about Transilluminators

To know the price of the Transilluminators we invite you to send us an email with your request using the contact form.

The delivery time of your Kalstein product will depend on the following:
  1. If the equipment of your interest is in stock or if it must be manufactured.
  2. The type of freight you have chosen, this may be; air or sea.
Equipment in stock:
- Delivery Time (Air): 15-30 days.


- Delivery Time (Maritime): 45-60 days.


Equipment not in stock:
- Delivery Time (Air): 30-60 days.


- Delivery Time (Maritime): 60-90 days.
You can make your purchase through:
  1. By email: [email protected]
  2. By telephone: +33 (0) 1 78 95 87 02
  3. E-commerce: Via Kalstein's official website in your country.
All Kalstein equipment has a 1-year warranty against manufacturing defects. The warranty does not cover damage caused by poor installation or operation by the user, transport defects or by uses other than those specified by the manufacturer. Warranty excludes electrical or consumable parts. For more information visit our โ€œterms and conditionsโ€ by clicking HERE
At Kalstein, we provide our customers with induction and technical support through new online methods. You can visit our induction videos, technical assistance and guidance provided by a Kalstein team through our YouTube channel (Kalstein English). HERE

Of course, you can request a quote for the Kalstein team of your interest, directly from our official website. Once you have identified your preferred model, click HERE

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