I have noticed that the performance of my current fluoride stripper diminishes over time, as evidenced by poor cleaning efficacy and substrate attack. I therefore must change the stripper bath more often than desired. What can I do to simultaneously improve the consistency of the process and minimize cost of ownership?
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David Rennie
U.S. Applications Manager
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Because many fluoride products are not buffered, the pH will change over time. To avoid time-dependent pH degradation and related adverse performance issues, unbuffered strippers must be replaced frequently. This will help maintain optimal performance, but will also increase the usage volume and cost of ownership.
Air Products-ACT offers a line of fluoride products with a specially-designed buffer system for greater process control and longer bath life. As seen below, the pH of the ACT product is very stable over an extended period of time. Air Products-ACT buffered fluoride strippers offer better performance at a lower cost of ownership.
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