Copper Passivation Solution
CU-PASS-SOL
Material Specific
Composition
CuSO₄, NH₄OH, H₂O
Mixed
Method
Immersion
Time
30s
Alternative Names
Tags
Reveals
Grain boundaries, twinning
Typical Results
For copper and copper alloys. Reveals grain structure.
Color Effects
Grain boundaries dark
Compatible Materials
Incompatible Materials
Application Method
Method:immersion
Typical Time:30 seconds
Preparation Notes
Mix copper sulfate solution with ammonium hydroxide and water.
Application Notes
Immerse sample for 30-60 seconds. Rinse with water.
Troubleshooting
Good alternative to ammonium persulfate for copper.
Storage Notes
Store in glass bottle. Shelf life: several weeks.
Alternative Etchants
- Ammonium Persulfate
Similar Etchants
- Ammonium Persulfate