Low solide flux SL-F-WTO-810

SL-F-WTO-810 is a composition of enhanced rosin & resin, organic activators, diverse additives, and solvent. It possesses outstanding solderability, radiant & complete solder spots, proficient tin-penetration capability, and even distribution. This makes it suitable for the welding temperatures of various lead-free solders. It’s an ideal No-clean flux for lead-free soldering.



  • It has a low surface tension leading to high solderability and flowability.
  • It exhibits strong wettability and an excellent ability for tin-penetration.
  • The residues are evenly distributed post-welding, providing a good finish and superior electrical reliability.
  • It’s an eco-friendly flux that adheres to the RoHS guidelines.


It finds extensive application in power products, computer motherboards, graphic cards, communication devices, audio equipment, cooling devices, and medical devices when mixed with lead-free solder. It’s suitable for various techniques including spraying, dipping, and foam expansion.

Additional information

Halogen Free

Halogen free

Solid content

4 ±0,8

Flux Classification



Pale Yellow Liquid

Specific Gravity(g/cm3@20°C)

0,800 ± 0,005

Acid Value (mg KOH/g)

26,50 ± 5,00

Chromate Paper Test




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