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Alcohol-based flux GSP-2933/RX/OVAP (multiflux)

Recommended method of application
Wave and selective soldering, dip soldering, and wire tinning

No Clean-Flux, alcohol-based
Di-carboxylic acid complex, halogenide-free (WEEE/RoHS compliant)
Typ ISO 9454: 1231 (1.2.3.A) // DIN-EN 61190-1-1 (J-STD-004): (IEC REL0)

Cat.-No. 3548

Technical Data

Appearance/smell: colourless to reddish, clear liquid
Hazardous goods: Yes
Solids content: 2.9 wt.-%
Acid number: 25 – 29 mg KOH/g
Halogenide-free: Yes
Resinous: Yes
Available as concentrate: No
Density at 20 °C: 0.79 (+/-0.005) g/ml
Flash point: 12 °C
Durability: 12 months


GSP-2933/RX/OVAP is a flux of the latest generation. It is a high performance No Clean-Flux based on alcohol with di-carboxylic acid activator complex and synthetic resin. This flux was used for selective and wave soldering processes, as well as for dip soldering process and cable-strands-tining developed. The application can be carried out by any usual application method (except foams). This flux is very versatile, both in wave soldering and special applications are good results. The generally valid rule to choose applied flux quantities as low as possible, also applies to this product.

Spray fluxing: When dosing, the amount of flux initially to 15 – 30 ml/min. adjust the uniform flux distribution on the printed circuit board (if necessary test with thermal paper) and then correct to the optimum amount. Preheating: For “simple” PCBs, a preheat temperature of 80 – 110 °C, recommended for “more complex” boards from 100 – 130 °C on the top side of the PCB. The use can be made both in leaded and lead-free solder systems.

Customer added value

  • Wide range of applications (multiflux)
  • Very good soldering properties (capillarity, wetting)
  • Broad process window (very high thermal stability, good activity over a long interval)
  • Very good residue behavior (very clean, high SIR)
  • Successful passing of internal test (SIR selective)

Packaging units

Canister: 5 l, 20 l