Selective Criteria for Developers

First of all, it has to be checked whether the developer has to be metal ion free (MIF), or alternatively metal ion containing (MIC) developers can be used. Most MIF developers are ready-to-use solutions, while typical MIC developers are supplied as a concentrate which has to be diluted before use.

Our Developers

AZ 326 MIF is 2.38 % TMAH (TetraMethylAmmoniumHydroxide).

AZ 726 MIF is 2.38 % TMAH with surfactants added for fast and homogeneous substrate wetting.

AZ 826 MIF is 2.38 % TMAH with surfactants added for fast and homogeneous substrate wetting, and further additives for removal of resist residuals occasionally remaining after development. These additives, however, slightly increase the dark erosion.

AZ Developer (MIC) is optimized for minimum Al attack. It is typically applied 1 : 1 diluted in DI-water for high contrast, or undiluted for a high development rate. The dark erosion of AZ Developer is slightly higher as compared to other developers.

AZ 351B (MIC) is based on buffered NaOH and typically used in 1 : 4 dilution.

AZ 400K (MIC) is based on buffered KOH and typically used in 1 : 4 dilution.

AZ 303 (MIC) is based on KOH and NaOH and designed for the resist AZ 111 XFS.

The next selection characteristic is the compatibility of the developer to a certain photoresist or/and a certain substrate material (see table below).

Table of Developers


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, Purity Grade and Shipping

Available Sales Units:

  • Sales volumes: 5 L bottles (1 PU = 4 x 5 liters)
  • 30 L, 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!