Cold light source infinitely adjustable, 150 W


Kaltlichtquelle mit elektronischer Helligkeitsregelung KL5125

Kaltlichtquelle mit elektronischer Helligkeitsregelung KL5125

Key features
Key features

Flexible in color temperature control

The large cold light source KL5125 has a particularly strong 150 watt illumination and is used less in the gemmological than in the biological and medical field. It allows the intensity to be controlled at a color temperature of 3350 K. Different light guides are available separately for this cold light source.

  • Special suitability for the biological-medical area
  • Brightness control stepless and without color change
  • 150 W halogen lamp
  • Color temperature of 3350 K
  • Various light guides available

Model specifications

ILLUMINATIONHalogen lamp 15V, 150W
DIMENSIONS245 x 200 x 150 mm
WEIGHT4000 g
EQUIPMENTWithout fiber optic light conducto

Suitable light conductors for this cold light source

One-arm light conductor, optical fibre
500 mm for all cold light sources
Available in our Gemmo shop

Twin-arm light conductor, optical fibre
500 mm for all cold light sources
Available in our Gemmo shop



The A.KRÜSS gemmology shop offers a wide range of analysers for professional use in gemology. Both the cold light sources and the matching accessories can be purchased directly from our Gemmo shop.

Besuchen Sie unseren Gemmo-Shop

What are the advantages of a cold light source?

The ambition of any scientific examination is to discover some truth about the sample being investigated, but too often the simple act of examination actually changes the sample before the research is completed. A case in point is the examination of biological samples under a microscope, where the radiant energy from the illumination can cause damage and even premature cell death. This problem, particularly noted with old-fashioned incandescent lamps, is effectively solved through the use of a fibre-optic cold light source.

By directing the visible light, without unwanted infra-red (heat) energy, sample illumination need no longer be a trade-off between being able to see the subject and being able to keep it alive. A steady colour temperature is another important consideration for the microscopist, so that delicate fluorescence effects are not altered by simply changing the brightness level of the illumination.

Cold light sources also offer advantages to the cost-conscious and environmentally-aware laboratory, promising long lamp life and low energy consumption with less maintenance requirement and lower power consumption.

Any Questions?

We will be glad to help.

A.KRÜSS Optronic GmbH
Alsterdorfer Str. 276-278
22297 Hamburg | Germany

Tel. +49 40 5143 17-0
Fax +49 40 5143 17-60