Ilford DDX

[Poppers]

I have some rolls of HP5+ and FP4+ to develop. Times are 10 mins for one and 9 minutes for the other. Would it be OK to do both in the same tank and split the difference at 9 mins 30.

 

[Lauffray]

Same dilution ? Yes I think it should be fine

 

[ja danke]

I mostly develop HP5+ in DDX @400-800 ISO. There is not much difference between 9 and 10 minutes. Actually I couldn't tell them apart.

 

[Poppers]

Same dilution ? Yes I think it should be fine

yes the dilution is the same. I'll maybe give it a go. This is the first time using DDX so I've no reference. Perhaps i should develop the first rolls independently then work out if they'd be ok + or - 30secs respetively

 

[GarageBoy]

Not sure about consistency- but can't you put the FP4 on the bottom and pour out half?

 

[Lauffray]

yes the dilution is the same. I'll maybe give it a go. This is the first time using DDX so I've no reference. Perhaps i should develop the first rolls independently then work out if they'd be ok + or - 30secs respetively

From experience, the Ilford documentation for their chemistry and films is excellent and very reliable. Follow their recommendation and you should be ok

Not sure about consistency- but can't you put the FP4 on the bottom and pour out half?

I really don't think 30s is going to matter that much, provided he's not agitating like crazy

 

[Poppers]

Not sure about consistency- but can't you put the FP4 on the bottom and pour out half?

I never thought of that. What a great idea.

 

[ja danke]

Believe me, you will not see any difference between 9 or 10 minutes. 9.5 minutes will be fine.

 

[CK Dexter Haven]

Not sure about consistency- but can't you put the FP4 on the bottom and pour out half?

NICE.
Someone has their Thinking Cap on.

 

[marek_]

I tend not to worry about half minutes. There are other variables such as difference in exposure that will be more noticeable. As Ned said DD-X doesn't lose you speed - should get a nice spread on the negs.