837LFWS is a water-soluble soldering flux. It has a neutral ρH at room temperature and becomes highly activated at soldering temperatures. Post-soldering flux residues must be cleaned, but are easily removed with water.

837LFWS is designed for wave soldering, surface mount assembly, and through-hole applications. It may be applied by spray, foam, or wave fluxing. 

Features and Benefits
  • Meets IPC J-STD-004B and type ORH1
  • For both leaded and lead-free solders
  • Excellent wetting and through-hole fill
  • Residues are easily removed with water
  • RoHS compliant and VOC free


Catalog Number

Net Volume

Net Weight Format
837LFWS-1L 1 L (1.05 qt) 846 g (1.86 lb) Bottle

Safety Data Sheet
Technical Data Sheet

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