Kester SELECT-10 Soldering Flux
Kester SELECT-10 Soldering Flux is a zero-halogen, no-clean liquid flux designed specifically to meet the demanding requirements of the selective soldering process. Formulated by Kester as part of their high-reliability product portfolio, this specialized flux is also available in a convenient flux-pen format. It integrates seamlessly into production lines alongside NP505-HR Solder Paste, NF372-TB Solder Flux, and RF550 Rework Flux.
Key Features and Performance Benefits
Engineered for precise deposition and long thermal resistance, ELECT-10 Soldering Flux delivers exceptional barrel fill and equipment reliability:
- Selective Process Optimization: Controlled fluid dynamics ensure the flux does not spread beyond the target spray pattern and will not clog the fluxer head.
- Sustained Activation: Promotes excellent through-hole barrel fill on challenging assemblies, including reflowed copper OSP boards and hard-to-solder components.
- Zero-Halogen & No-Clean Chemistry: Meets zero-halogen environmental standards while leaving non-tacky, low-residue deposits for enhanced cosmetic appearance.
- High Reliability Compatibility: Formulated to work in harmony with Kester’s high-reliability paste and rework flux formulations.
- Versatile Dispensing Options: Available both as a liquid flux for automated machinery and as a flux-pen for localized rework.
Technical Specifications
| Property | Specification / Detail |
|---|---|
| Product Name | Kester SELECT-10 Soldering Flux |
| Flux Type | Zero-Halogen, No-Clean Liquid / Flux-Pen |
| IPC J-STD-004B Classification | ROL0 |
| Primary Application | Selective Soldering Process |
| Residue Characteristics | Non-Tacky, Improved Cosmetics |
| Ecosystem Compatibility | NP505-HR, NF372-TB, RF550 |
Conclusion
Implementing Kester SELECT-10 Soldering Flux ensures precise spray control, prevents nozzle clogging, and guarantees reliable solder joints on complex board designs. For procurement, technical support, or product inquiries, please visit Contact – LORIOT INDUSTRIAL.

