Tibor, just asking about your standard PAP-staining: which one do you use (when reading:

https://www.ihcworld.com/_protocols/special_stains/papanicolaou_stain.htm

with 3 procedures: 

i)    Procedure 1 (Standard Method)

ii)   Procedure 2 (Modified Pap Procedure)    and 

iii)  Procedure 3 (Rapid Economic, Acetic Acid, Papanicolaou Stain Method)

I am wondering why you did not get any answer since 2012! (but admit that I found your question some minute ago....)....would recommend, to edit your question and add some keywords more: e.g.: Histology, Histochemistry, smears, Staining   to eventually increase readership.... best wishes and good luck...W.M.

NB: I haven't done PAP-staining during my former professional career...but perhaps I could help -at least knowing the protocol of your PAP-stain....