Really basic question dd-x question !

<p>Really basic question! <br />The instructions say to mix dd-x 1+4<br />so thats 1 parts dd-x and 4 parts water ... <br />however on something like the 'massive dev film chart'<br />there is options for dd-x stock and dd-x (1+4)<br /><br />my question : when some says they use dd-x (1+4) does that mean <br />1 part dd-x and 4 parts water <br />or <br />1 part dd-x (already diluted as per ilford instructions) AND 4 parts water?<br /><br />THANKS !</p>

<p>It means 1 part dd-x from the bottle plus 4 parts water.</p>

<p>Some people dilute it a bit more for economy. I have read of 1+6 and 1+9 but I haven't tried it.</p>

<p>Thanks alot ! </p>

<p>DD-X is the Ilford version of Kodak T-Max Developer. Most use it from concentrate just like so many other liquid concentrate developers. It last a lot longer that way. </p>

<p><em>DD-X is the Ilford version of Kodak T-Max Developer.</em></p>

<p>This is the first time I've seen this claim. I tend to think of DD-X as being the Ilford developer most similar to Kodak's Xtol (although obviously DD-X comes as a mildly-concentrated liquid and Xtol comes as a power). So I'd be very curious to hear about the sources / bases for the comment (chemistry, intended applications, etc.). Thanks!</p>

 

<p> Have you ever heard of people diluting Xtol past 1-3?</p>

<p>I've more often heard DD-X called "liquid Microphen." <br /> It's expensive, but seems to be very stable in an opened bottle, making it a great deal in my book for infrequent use. (Not as stable as HC-110 syrup, but DD-X has some water in it, HC-110 liquid is all glycol.)<br /> One similarity is that Ilford Ilfotec DD-X, Kodak T-MAX, and Kodak XTOL developers all use Dimezone S (1-Phenyl-4-Methyl-4-Hydroxymethyl-3-Pyrazolidone) as a developing agent. Dimezone is similar to Phenidone (who use Ilford poineered), but easier to work with in some ways. (Ilford Microphen still uses Phenidone.) All but XTOL also include Hydroquinone as a developing agent.</p>