4% Picral
general purpose
Composition
4% Picric Acid in Ethanol
4%
Method
immersion
Time
10s
Basic Information
Category:General Purpose
Composition:4% Picric Acid in Ethanol
Concentration:4%
Reveals:Pearlite, cementite, grain boundaries
Typical Results:Excellent for revealing pearlite structure. Does not attack ferrite grain boundaries as strongly as Nital.
Color Effects:Pearlite darkens, ferrite remains light
Available from PACE Technologies
This etchant is available as a ready-to-use product.