The 1621-10SB is an E-Line Hydrocarbon-based Defluxer formulated to be powerful. It eliminates brushing and scrubbing, saving time and materials. Micro-components and fine pitch leads are delicate and easily damaged, so brushing and scrubbing should be avoided if possible. Techspray aerosol solvents have a powerful spray and strong solvent that blasts off residues and cleans areas under components that a brush cannot touch. It is ideal for sensitive plastics. The flux remover/defluxer for removes flux residues and other contaminants left by manufacture, rework or repair of printed circuit boards. Residues from higher, lead-free temperatures are more baked on and harder to clean. Techspray flux removers have been proven very effective at removing fluxes baked on at lead-free temperatures.