Super Picral, 250 mL



Super Picral is a metallurgical etchant for the microscopic study of heat-treated steels with more than 0.5% chromium. It is recommended for steels with ferrite and carbide structures. This product contains picric acid, ethanol, and a small amount of hydrochloric acid.

  • Option: To further increase the etching speed of this saturated solution, we can add a wetting agent called zephiran chloride to increase the etching rate and uniformity.


User Instructions:

  • Mirror-polish the sample surface before etching.
  • Immerse or swab the sample for a few seconds to minutes.
  • Close the lid after each use to avoid alcohol evaporation.
  • Do not let the solution crystallize or dry out completely. Inspect the content periodically and add solvent as needed. Please consult SDS for more information.
  • This product will stain skin and clothing. When rinsing the sample after etching, it is advisable to rinse in water to remove the bulk of the etchant, and then immerse the sample in a beaker of alcohol, followed by flushing the surface with alcohol from a squeeze bottle.
  • For prior-austenite grain boundaries studies, please use the other product.
  • Discard after 1 year.


Nalgene® Leakproof Bottle, HDPE.


California Proposition 65 WARNING: This product contains methanol which is known to the State of California to cause reproductive harm.

Additional information

Weight 0.8 lbs
Dimensions 4.4 × 2.7 × 6.5 in
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