WS995 Water-Soluble Tacky Flux 10cc Syringe Chip Quik WS995 Water-Soluble Tacky Flux 10cc Syringe contains a synthetic water-soluble flux with a pleasant odor. This tacky flux syringe features excellent wetting with high activity (REH1) flux that won't run all over the PCB when applied. The tacky flux syringe can be used in leaded and lead-free applications and is RoHS 3 and REACH compliant.