• Cleaning of flux residues

  • Special applications

  • Selective soldering

  • Cable assembling/Wire soldering

  • Manual assembling

  • Wave soldering: foam fluxing

  • Wave soldering: spray fluxing
Water- and alcohol-based flux
Flux for cable assembling
Cleaning agents
Otto's Original - Quality products since 1901

Water-based flux


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


Standard packaging units liter_20 20 L

Appearance:colorless, clear liquid
Solids content:3.5 wt%
Density 20 °C:1.00 - 1.02 g/cm³
Acid number:28 - 32 mg KOH/g
Activators/resin:di-carboxylic acids
Flash point:non-flammable
Durability:12 months

The WB-35/SOX/DT is purely water-based and is characterized by very good wetting properties. It is ecologically harmless and non-flammable. The WB-35/SOX/DT with its soldering-related properties is at least just as good as comparable alcohol-based soldering fluxes. Application takes place using a spray fluxer. The main area of application is in wave soldering.

In practice it has been shown that with the correct application, the washing of printed circuit boards soldered with this flux can be largely dispensed with.

Application (recommended): Wave soldering (spray fluxing)

Customer added 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 clean, high SIR)

product overview

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