Why does flux residue have to come off?

Because it is mildly conductive and draws moisture, so it creates leakage paths between pads. That is how a repair that tested fine comes back as an intermittent fault weeks later.

What should I clean a board with?

Isopropyl alcohol, ideally 99%, with the board tilted so dissolved residue runs off rather than resettling. Let it dry fully before power goes anywhere near it.

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2UUL CL-51 Soft Squeeze Bottle

Name: 2UUL CL-51 Soft Squeeze Bottle
Brand: 2UUL
SKU: 2UUL-CL51
Price: 150 PKR
Availability: InStock

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2UUL CL-51 Soft Squeeze Bottle.

Rs 150

2UUL CL-51 Soft Squeeze Bottle. A squeeze bottle with a fine tip lets you place a drop of solvent exactly where a chip needs cleaning rather than flooding the…

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2UUL CL-51 Soft Squeeze Bottle.

A squeeze bottle with a fine tip lets you place a drop of solvent exactly where a chip needs cleaning rather than flooding the area. Anything that reduces the amount of liquid on a board is worth having.

Key features

Fine tip for drop-precise dispensing
For isopropyl alcohol, flux and solvents
Keeps liquid volume on the board low

What this is used for

Removing flux residue after soldering
Cleaning a liquid-damaged board
General bench cleaning

Who it's for

Repair technicians who clean boards properly after soldering.

Manufacturer description

2UUL CL-51 Soft Squeeze Bottle. A squeeze bottle with a fine tip lets you place a drop of solvent exactly where a chip needs cleaning rather than flooding the area. Anything that reduces the amount of liquid on a board is worth having. • Fine tip for drop-precise dispensing • For isopropyl alcohol, flux and solvents • Keeps liquid volume on the board low Compatible with: Phone logic boards, components and repair tooling.