High Purity Rosin Soldering Flux Paste for Electric Soldering Iron Welding 50g or 85g

This soldering flux is formulated from high-purity rosin to improve solder flow and joint reliability during electronic assembly and repair. It is designed for use with electric soldering irons operating between 280°C and 380°C. The paste consistency keeps the flux in place on the workpiece, making it easier to apply precisely. Available in two practical sizes, the 50g or 85g pot suits both occasional hobby work and regular maintenance tasks.

Features and Construction

This flux is built around a standard rosin-based formula that has been used for generations in electronics work. The paste format offers controlled application without the mess of liquid fluxes.

Material and Build

Made from high-purity rosin, this flux is free from added corrosive activators that could damage sensitive components. The paste has a smooth, spreadable consistency that stays put when applied to vertical surfaces or small joints. It comes in a sealed plastic pot to preserve its effectiveness between uses.

Size and Practical Fit

You can choose between two sizes: the CMT-50 paste flux contains 50g of flux, while the CMT-150 paste flux contains 85g. Both fit easily into a standard electronics toolkit or bench drawer. The smaller 50g pot is ideal for occasional use, while the 85g pot suits more frequent soldering sessions.

Uses and Placement

This flux is intended for tin-lead and lead-free soldering applications using standard electric soldering irons. It is suitable for through-hole and surface-mount component work, as well as general wiring and repair tasks.

Event or Professional Use

In a workshop or repair centre, this flux helps speed up soldering by reducing the time needed to clean and tin tips. Its paste form is easy to dispense from the pot with a small brush or soldering iron tip. The operating temperature range suits most common soldering irons used by technicians and engineers.

Everyday Home Use

For hobbyists building electronics kits or repairing household devices, this flux simplifies making sound solder joints. The 50g pot is a practical starter size. The paste stays usable for months if the pot is kept closed when not in use.

Benefits and Buying Value

Choosing a rosin flux that is already in paste form saves the step of mixing or diluting. The two size options let you buy only what you need for your typical workload.

Reuse and Low Maintenance

One pot of paste flux lasts through many soldering sessions. The flux does not evaporate quickly, so you can take out a small amount and reseal the container. No special storage conditions are needed beyond keeping the lid on tight.

Why Choose This Product

This flux offers a straightforward, no-nonsense formulation that works with the soldering temperatures most commonly used in electronics. You get a known material in a convenient paste format, backed by a simple choice of two weights to match your usage pattern.