Our FAQs are organized into different topics. Simply select the appropriate category to quickly find the answers that are relevant to you.
Here you'll find a selection of frequently asked questions and answers for a quick overview.
The flux must remain sufficiently active throughout the required temperature range of the soldering process. This is particularly important at higher solder bath temperatures and in processes where wire strand coatings are thermally removed during soldering.
Solar panels should be cleaned especially after the pollen season in the spring. During this time, large amounts of pollen often accumulate on photovoltaic panels. Regular visual inspections and cleaning with suitable cleaning agents, such as photovoltaic cleaners from Emil Otto, can help maintain the system’s performance.
EO-S-009 FD is a halide-free, no-clean flux for soldering solar modules, tabber and stringer materials, and for joining solar cells. It leaves no sticky residue, has a solids content of 1.8 %, and is non-corrosive.
An anti-foaming agent is useful when unwanted foaming occurs during aqueous cleaning processes. It can reduce foaming and thereby contribute to a more stable and reliable cleaning process.
The right flux promotes uniform and controlled tinning of the strands and improves wetting with the solder. At the same time, it is essential to ensure that neither flux residue nor flux penetration into the cable or strand insulation compromises the subsequent reliability of the connection.
Greasy residues can stick together and harden under UV light. Emil Otto's cleaning agents leave no such residues and are gentle on the equipment, the materials used, and electronic components.
ZINNIN GREEN I Sn100 is lead-free, zinc-free, and complies with the WEEE/RoHS directives. The paste also features a labeling-free formulation and is not classified as a hazardous material. Flux residues are visible under UV light and can be removed with deionized water if necessary. These properties support controlled and efficient application in piping construction.
Excessive foaming can interfere with automated cleaning processes and put a strain on equipment components such as valves or pumps. Targeted foam control may therefore be necessary, particularly in the case of water-soluble flux residues.
Modern cell technologies in particular, such as TOPCon and heterojunction, can be sensitive to unnecessary heat input. Suitable fluxes can support gentler yet stable process control through optimized drying characteristics and lower preheating temperatures.
Pollen can reduce the performance of solar panels by approximately 2 to 10 percent. Pollen forms a fine film on the glass surface of photovoltaic modules, which scatters or absorbs sunlight. Special cleaning agents for solar systems, such as products from Emil Otto, help effectively remove these deposits.
