TechniEtch™ACI2 (the former Gold Etchant or Au Etch)

TechniEtch™ACI2 is a highly effective & selective gold stripper.
TechniEtch™ACI2 is an Iodine based Gold etchant, containing
particular additives that greatly enhance stability and metal loading
capability compared to conventional I2/I3
- based solutions .

Solution Main Features:

  • High etch rate at room temperature.
  • Low surface tension for enhanced wetting property.
  • High stability even in presence of metal contamination
    (Cu, Ni…).
  • Loading & bath life independent of the solution Cu
    contamination level (up to 1g/l).
  • Enlarged loading capacity compared to standard I2/KI
    based solutions.
  • Better process controllability/reliability.
  • Low Toxicity compared to cyanide and HF/HNO3 based

For further information please refer to: TechniEtch ACI2- or Goldetch.pdf
additional information: TechniEtch ACI2 (Goldetch)
General information to this topic:Wet Etching.pdf

Lithography Application Notes

Our list of application notes with litho-related theoretical and technical background on all stages of micro-structuring can be downloaded from here: application notes.

Sales Volumes, Shipping and Pricing

Available Sales Units of Buffered Hydrofluoric Acid

  • Bottles á 2.5 L (also single bottles)
  • 30 or 200 L drums on request

Our typical lead time is 1-3 working days within Germany, lead times to other countries on request. On demand, in urgent cases our etchants can be shipped within 24 hours to a destination inside Germany.

Please send us your request.

e-mail: sales(at)
phone: +49 (0)731 977 343 0
fax: +49 (0)731 977 343 29

Thank you very much for your interest!