Soldering Kit: Solder, Rosin, Acid, Flux

Description

The BIQU soldering kit is a complete package designed for both hobbyists and professionals, making it easier to perform precise soldering tasks in electronics and electrical work. The set includes high-quality AG Termopasty flux paste based on rosin with a medium-activity flux, ideal for soldering copper, silver, zinc, and nickel. The AG rosin also acts as an effective flux for tin-lead alloys and finds use in printing and music applications. The kit also contains AG soldering acid, formulated for use on nickel-plated surfaces—this highly active agent with phosphoric acid content facilitates soldering on difficult materials. Completing the set is Sn60Pb40 SW26 solder wire, compliant with EN ISO 9453:2014, offering excellent conductivity and mechanical strength for both manual and automated soldering.

Features:

AG Termopasty Flux Paste

• Rosin-based with medium-activity flux
• Ideal for soldering copper, zinc, silver, and nickel
• Non-corrosive to non-ferrous metals
• Insoluble in water – requires alcohol-based cleaner
• Flash point: < 1°C
• Density at 80°C: 1.1 g/cm³
• Used in radio, communication, and electronics

AG Termopasty Rosin

• 25% solution in isopropyl alcohol
• Perfect for tin-lead soldering
• Also used in printing and for bow hair treatment in string instruments
• Multi-purpose: electronics, music, coatings, varnishes

AG Soldering Acid

• Designed for nickel-plated surfaces
• Composition: 35% phosphoric acid
• pH: < 1
• Density: 1.2 g/cm³
• Volume: 35 ml (plastic bottle)
• Must be used with care and rinsed with water

Sn60Pb40 SW26 Solder Wire

• Composition: 59.5–60.5% tin, remainder lead
• Melting point: 183–190°C
• Flux: SW26 (non-corrosive, IPA washable)
• Flux content: 2.5 ± 0.2%
• Electrical resistivity: 0.153 µΩ·m
• Thermal conductivity: 49 W/m·K
• Tensile strength: 535 kgf/cm²
• Elongation at break: 40%
• Recommended soldering tip temp: 340–420°C
• Meets EN ISO 9453:2014 standard