Otto's Original - Quality products since 1901


No clean, water based flux, VOC-free, di-carboxylic acids,
resin-free, halogen-free (WEEE/RoHS compliant)
Type // ORL0 acc. ISO 9454 // DIN EN 61 190-1-1

Packaging units:
20 l
Application area: Wave- and selective soldering
Appearance/smell: colorless, clear
Solids content: 3.5 Gew.-%
Density at 20 °C: 1.00–1.02 g/ml
Acid number: 28–32 mg KOH/g
Activators: di-carboxylic acids
Solvents: water
Flash point: non-flammable °C
Durability: 12 months
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The WB-35/SOX is pure water-based and has been developed to be used with wave soldering machines. It is ecologically harmless and non-flammable. The WB-35/SOX with its soldering-related properties is at least just as good as comparable alcohol-based soldering fluxes. Application takes place using a spray fluxer. It has a high level of activity.

Practice has shown, that no washing is needed for PCBs properly soldered with WB-35/SOX.

 Added customer value:

  • Non-flammable (no legal restrictions for transport, storage and handling)
  • Very good soldering properties (capillarity, wetting)
  • Broad process window (high thermal stability, good activity over a long interval)
  • Very good residue behaviour (optically very clean, high SIR)

Questions about our products?
We will advise you by phone 06123 / 7046-0.