Klemm's 2

specialty

Composition

250ml saturated Na₂S₂O₃ solution, 25g K₂S₂O₅

Saturated

Method

immersion

Time

60s

Basic Information

Category:Specialty

Composition:250ml saturated Na₂S₂O₃ solution, 25g K₂S₂O₅

Concentration:Saturated

Reveals:Phases (color contrast), grain boundaries

Typical Results:Color/tint etch with higher metabisulfite loading than Klemm's I. Differentiates phases in copper alloys, cast iron, and tin via interference colors.

Color Effects:Produces interference colors; phases tint differently