100g Rosin-Based K-11 K-12 Non-Toxic Soldering Flux Eco-Friendly Surface Protection for Welding & Soldering

KUNIHIKO K-11/K-12 Rosin-Based Soldering Flux – 100g Premium soldering flux formulated for electronics repair, PCB assembly, and precision welding. This non-toxic, eco-friendly flux combines professional-grade performance with environmental responsibility. Performance Highlights: 82% spreading rate ensures efficient coverage and consistent solder flow. Minimal halide content (0.01%) eliminates corrosive residue, leaving boards clean and reliable. Passes copper-mirror testing for superior quality assurance. Technical Specifications: Electric resistance: 4×10¹²Ω | Water extract resistivity: 5×10⁴Ω·cm | Preheating temperature: 90–115°C | Specific gravity: 0.795±0.005 | Boiling point: 85–130°C | Solid state components: 1.5±0.5% Ideal for circuit board repair technicians, hobbyists, and industrial applications where clean joints and long-term reliability matter. The high electrical resistance protects sensitive components from unwanted conductivity. Backed by 1-year warranty and OEM-certified manufacturing from KUNIHIKO. Store in a cool, dry place for optimal performance.