Industrial cleaners serve as nPB replacement

TECHSPRAY PWR-4 solvent cleaners are suitable replacements for n-propyl bromide (nPB) and other toxic industrial solvents because they are safer, non-flammable, and cost effective. Available in aerosol or bulk for vapor-degreasing, ultrasonic and immersion cleaning, product quickly blasts off oils, greases, fluxes, silicones, dirt and grime. Engineered to remain stable and effective over thousands of cycles in vapor degreasing equipment, product is stabilized and safe for metals such as aluminum, magnesium, titanium, and brass. http://www.techspray.com