We have seen that you are working in microelectromechanical system and we
would appreciate  any information about the following related question.

We are developing AZ 1505 photoresis with AZ 351 developer, that is a 0.5 %
Sodium hidroxide solution. We would like to know if it is possible to
prolong the lifetime of our developer and how.

We look forward to hearing from you soon.


Beatriz Palacios