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Temperature for Cleaning Water Soluble Flux

The general trend for water temperature in aqueous cleaning applications is that hotter is better. Running hotter water in equipment is also generally more expensive. To allow a good process window, we design most of our water soluble fluxes to be cleaned in room temperature de-ionized water. With this in mind, you have some “wiggle-room” in your process to turn up the heat if you want to run a longer or hotter than normal reflow (which may char a flux, impacting cleanability).