Home Resource Center Product Data & Related Literature Beryllium Beryllium Metal Technical Papers Passivation & Plating Resources Recommended Cleaning Procedures For Beryllium Materion Brush Beryllium & Composites’ recommended cleaning procedures for beryllium include vapor degreasing, immersion cleaning, and fingerprint-free handling. Recommended Etching Procedures Solutions Etching is performed on machined beryllium surfaces in order to remove the machine-damaged layer of material. Materion’s suggested procedures for etching beryllium include the use of various acids followed by rinsing with de-ionized or distilled water. Recommended Procedure For Cleaning And Passivation Of Beryllium Parts Materion Brush Beryllium & Composites provides detailed guidelines for cleaning and passivation of beryllium parts.