Adolux APH 09 changed concentration (a bit)

<p>Just to let you know that I received confirmation from ADOX that the concentration of Adolux APH 09 has changed a bit. Whereas before you would use a dilution of 1+40, now the same time but with a dilution of 1+50 is recommented.</p>

 

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<p><strong>Question</strong>: I have been using Adolux APH 09 and AODX film for a while and noticed that the name has slightly changed to include (1+50). Am I correct in understanding that from now on, a dilution of 1+50 is recommended where we used a dilution of 1+40 before? In other words, has APH 09 become just a little bit more concentrated?</p>

<p><strong>Answer</strong>: That's true. The dillution changed a bit. But the formula is the same.</p>

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<p>I've added a note to my <a href="http://monochrome.me.uk/blog/index.php?x=development">development </a>page to include the above information.</p>

<p>That's disconcerting. Thanks for the heads up.</p>

<p>My message timed-out before I could update it, but nice site, Hans. I enjoyed reading your development times. And thanks for the plug for my book<g>.</p>

<p>Thanks Michael. And I did appreciate your book about stand development a lot, so credit given where credit was due.</p>

<p>Old data is not very acurate anymore. And it's not clear in dilution using APH09 or Adolux/R09 one shot/Rodinal.</p>

<p>I thinks it's very confusing now.</p>

The change seems to have started in 2007:<p>

 

<A HREF="http://translate.google.co.uk/translate?hl=en&sl=de&u=http://forum.fotoimpex.de/index.php%3Fshowtopic%3D1714&ei=lA4kT57FGIbp8QPa5KzUBw&sa=X&oi=translate&ct=result&resnum=3&ved=0CEIQ7gEwAg&prev=/search%3Fq%3Daph09%2Bmirko%26hl%3Den%26rlz%3D1T4ADFA_enGB376GB377%26prmd%3Dimvnsfd">Fotoimpex</a></p>

<p>Now I'm more confused than ever :-) I'll see if I can get some more information</p>

<p>I received an answer from ADOX, apparently the change took place about 2 or 3 years ago and they mentioned that the values given in the Massive Dev Chart are still correct. No indication on how to find out the difference in bottles.<br /> Judging from the statements by ADOX, I might have caused a storm in a teacup and nothing really has changed recently that we should be aware of. The way I interpret the email, we have been using the new concentration for some time.<br /> This was the reply:</p>

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<p>Changing was probably before 2 or 3 year. What we know is that the digitaltruth page still works.<br /><br />We had since all that time no customer wich have problems with this dillution.</p>

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<p>The Massive Dev Chart entry for APH 09 suggest to use the times and dilutions for R09, but the R09 entries do recommend dilutions 1+40, 1+80, etc.<br /> I guess I'll shoot a test film, cut it in half and use the same times with a 1+40 and a 1+50 dilution to see what the difference is.</p>