First of all, thank you very much for your advice. I recently sent an email to FOTOIMPEX and was told that the EFG is available through them. Are you familiar with Otto Beyer’s website?
http://www.fotografie-in-schwarz-weiss.de/sw-fotografie/filme-eintesten/39-film-entwickler.html
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Here, the advantages of Microdol-X are described in what I consider to be an extremely knowledgeable manner. This article, like the entire site in general, is well worth a read.
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Ciao!