Problem of amount

[g.marchetti]

Hi.I normally develop 6 sheets of film in a Paterson tank 1 liter with HC 110 at 1:31 dilution B,and it's ok.If i would use dilution H 1:64,i could'nt reach the minimum amount of concentrate recommended by Kodak.
Any solution? Thanks

 

[Vaughn]

Prepare two liters of developer. Start with one liter, then halfway through development, dump out the developer and put the second liter of developer in.

Or...only pour out 3/4s of the developer and refill with new developer.

 

[markbarendt]

Develop fewer sheets per run.

 

[markbarendt]

I guess my question would be why would you want to?

 

[g.marchetti]

I guess my question would be why would you want to?

I would use this dilution for the Foma 100 film,to extend the development time

 

[markbarendt]

How about using cooler chemicals?

 

[MattKing]

Hi.I normally develop 6 sheets of film in a Paterson tank 1 liter with HC 110 at 1:31 dilution B,and it's ok.If i would use dilution H 1:64,i could'nt reach the minimum amount of concentrate recommended by Kodak.
Any solution? Thanks

I'm assuming that you are speaking about 4x5 sheets.

The Kodak capacity recommendation in J24 for HC-110 differentiates between tray and tank development.

For dilution B, the capacity recommendation for trays is ten 4x5 sheets (2.5 8x10 sheets) per litre, while the capacity recommendation for tanks is twenty 4x5 sheets (five 8x10 sheets) per litre.

So for dilution H, the numbers would be half that per litre: trays - five 4x5 sheets; tanks - ten 4x5 sheets.

If you are using a Paterson tank, I would suggest that the tank recommendation would be the better analog. Even if you use the tray recommendation, developing six is so close to developing five that you are probably okay.

 

[Vaughn]

Can someone explain why tank vs trays doubles the capacity? Less oxidation?

 

[Doremus Scudder]

There's no reason you can't use an intermediate dilution of your own choosing and find an appropriately longer developing time by testing. I'd start with the minimum amount of stock you need for your six sheets, add water to make 1 liter and then call it "dil. xyz" or whatever. Test your times and you're good to go.

Best,

Doremus

 

[g.marchetti]

Clear explanation Mark,veryfied on Kodak sheet.Thanks

 

[g.marchetti]

Excuse me Matt