Fluxes, solders and cleaning agents for reliable assembly production

Wide range of chemical products for high-quality metal processing
Fluxes, solders and cleaning agents for efficient solar cell production


We offer reliable consumables for assembly production. As an owner-run company, we are committed to the development and production of high-quality fluxes and other consumables, such as solders, soldering aids, cleaning agents and ESD products.


Our origins lie in metal chemistry, from which our know-how and many years of experience in the manufacture of chemical products for the metal processing industry originate. This builds the foundation for our extensive product range, which covers a wide variety of applications with the highest quality.


Fluxes, solders and cleaning agents for the solar industry – Made in Germany. We offer a wide product range for soldering solar modules, tabber and stringer material as well as connecting cells. The fluxes are No Clean-Products, which are formulated halogen-free.

Questions? We will be happy to advise you


Quality products
since 1901

Our company, Emil Otto, was founded in 1901 and since then has a long tradition in the production of high-quality fluxes for use in the soldering industry. We specialise in the development and production of high-quality fluxes that are widely used in the electronics, automotive and mechanical engineering industries.
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Product highlights

Our team has years of experience and extensive expertise that goes into the development of our products. So you can be sure that you always receive the best solutions for your requirements.

Latest news

News, trade fair and events

Illustration: Several rows of photovoltaic panels

Emil Otto expands its portfolio of cleaning agents for the solar industry

The German flux and cleaning specialist Emil Otto is expanding its range of cleaning agents ...


Emil Otto presents an expanded portfolio of flux gels at productronica 2023

Flux gels are frequently used for rework on assembled PCBs. In the past, this often ...

20 June 2024

Technology Park Berlin, Germany


19.-21. June 2024

ICM Munich, Germany

Intersolar 2024