Potassium hydroxide is a good etching agent for glasses. If the sample is laser processed, then the etching rate is much more faster. I want to use stainless steel (because of its good thermal conductivity) as a vessel which will contain the KOH solution with the laser processed samples. I have to maintain the temperature of KOH at 85 degree celsius as the sample is getting sonicated at ultrasonic frequency for faster etching. Is steel vessel is what I should opt for for the above mentioned etching process. Or are there better options?