Kester 984 Soldering Flux for Circuit Board Assembly
Kester 984 Soldering Flux is a low-solids, alcohol-based, no-clean flux chemistry designed for high-quality soldering of electronic circuit board assemblies. Developed by Kester, this liquid flux represents a significant technological advancement in low-residue wave soldering processes.
Alcohol-Based Performance and Nitrogen-Free Wave Soldering
Formulated with approximately 2.2% solids content, Kester 984 delivers exceptional wetting without requiring any nitrogen atmosphere in the wave soldering process. This allows electronic manufacturers to maintain high soldering standards while optimizing process operational costs.
Cosmetic Cleanliness and Non-Corrosive Residue Profile
The minimal residue left behind by Kester 984 Soldering Flux is completely non-tacky, ensuring printed circuit boards remain cosmetically clean as they exit the wave solder machine. Additionally, all remaining residue after soldering is non-conductive and non-corrosive, meaning Kester 984 Soldering Flux can be left safely on assemblies without degrading electrical reliability.
Technical Specifications
| Property | Specification |
|---|---|
| Product Model | Kester 984 |
| Flux Type | Alcohol-based, Low-Solids, No-Clean Liquid Flux |
| Solids Content | ~2.2% |
| Nitrogen Requirement | Not Required for Wave Soldering |
| IPC J-STD-004 Classification | ORL0 |
| Residue Characteristics | Minimal, Non-tacky, Non-conductive, Non-corrosive |
| Cleaning Required | No |
Conclusion
Using advanced low-solids flux chemistries ensures optimal solder joint integrity and clean board appearance in modern production lines. For technical assistance, product datasheets, or order placements, please reach out directly through Contact – LORIOT INDUSTRIAL.

