List of Articles in the Category Explosion-Proof Ultrasonic Cleaners

Ultrasonic Cleaners for Flammable Solvents

ultrasonic cleaning using flammable solvent

Ultrasonic cleaners are widely recognized as providing outstanding cleaning action thanks to the cavitation produced by the equipment’s generator powered ultrasonic transducers.  But when cleaning with flammable solvents it is imperative that explosion resistant ultrasonic cleaners are employed in the shop, and that the equipment be located in an area equipped with an adequate exhaust system to vent fumes to an exterior location.

Flammable solvents are often preferred for tough cleaning jobs such as degreasing and removing tenacious contaminants like paint and adhesive residues.  Special care must be exercised when cleaning with flammable solvents under any circumstance, but especially when using an ultrasonic cleaner to both speed the process and improve cleaning results.   Unless they are specially constructed, ultrasonic cleaners present two risks:  sparks from internal electronics igniting spilled solvents and fumes, and vapors from solvent evaporation creating a hazardous area in the vicinity of the unit.   … Read the rest

How to Safely Use IPA in an Ultrasonic Cleaner

A benchtop Electrowave ultrasonic cleaner for flammable solvents

A benchtop Electrowave ultrasonic cleaner for flammable solvents

Isopropyl alcohol instead of water-based solutions is used for ultrasonic cleaning in order to avoid solution residues on cleaned components.  This can be especially important when cleaning implantable medical devices.  There are other instances where water-based solutions will not perform satisfactorily in an ultrasonic cleaner.

Because IPA is highly flammable steps must be taken to avoid the danger of an explosion and/or a fire from the igniting of the liquid or its fumes.  There are two generally accepted procedures for safely cleaning parts with IPA in an ultrasonic cleaner.

Isolate the IPA from the Environment

This method works best when the parts to be cleaned are relatively small and cleaning is done on an occasional basis rather than as a full-time procedure.  Carefully place the parts in a flask or beaker and add just enough IPA to ensure they are fully immersed.  … Read the rest