D-76R volume question

[DLawson]

Not sure why this can't be on the package, but digging up Kodak Publication J-78 to try to find out how much D-76R I should use, it says to use "22.2 to 29.6mL of replenisher for each 135-36 . . . ."

At my level of precision/experience it probably won't matter, but how do I decide on where in that range to go? If it matters, I'm using HP-5+ with a stock/reuse jug of 1 US gallon.

 

[Keith Tapscott.]

I have never tried D-76 with replenisher, but I think I would try averaging Kodak`s suggestions for replenisher volumes. Try 25ml to start with.
I noticed that Ilford`s suggestions for ID-11 replenisher is 90ml for every ten 135-36 or every ten 120 film-rolls.
Ian Grant has used these developers replenished, so he will be able to offer good advice on replenishment.
D-76 and ID-11 are quite forgiving with moderate processing errors, so I wouldn`t worry too much.

 

[Ian Grant]

Yes, as Keith says I used ID-11/D76 very extensively replenished, just replenish after every 10 films, we replenished at roughly Ilford's rate, the published replenishers are identical as are the formulae. So if making up from raw chemicals use the Ilford figure.

However Kodak's commercial product may have changed, so if using pre-packed D76R use Kodak figures. With certain developers there were two replenishers, one for topping up the other for bleeding off, so it's probably more important to use Kodak's figure which is more of a bleed off i.e.you need to add more than is lost in use.

Ian

 

[DLawson]

Thanks. Going ahead with 25ml/roll.

Now I just need to get my exposure problems worked out. sigh.

 

[Ronald Moravec]

Use the lower volumn for traditional films and higher for films like T-Max.

If you are doing snowscenes, more replenishment is needed. If night scenes with few lighted structures, less.

Then go by how the negs print. If you are drifting to #3 paper, more replen is required.

The best way to control this is a densitometer and control strips and large volumn of developer, the larger the better.

When the developer gets old, mix new with 25% old.

Season the new first time developer with a few unimportant rolls.