Topic: Kodak HC-110 developer European Dilution?

[choppert]

Hello,

Just developed a roll of TriX in HC-110 and got awfully confused about it being European dilution.
Looks like our version is more dilute (viz expensive!)
So I put 19ml in 280 ml of water to make my working solution (solution E).  Is this right?!

What do I get by diluting more and developing for longer?  What does that do to my negs? 
Does it reduce contrast but help reduce grain?

Thanks,


Chops

[Karl]

are you using the concentrated european solution? It's been a while since I used it but I can look up my old dilutions for you...the dilution thing used to bug me too so I stopped usingit...hang on there and I'll dig out what I've got

[Karl]

OK, here's what I've got for you based on my notes and old technical sheets:

1. I used Dilution B. I think the higher dilutions might have been for financial savings and more probably development time advantages (HC110 can be a bit too quick for some films at lower dilutions) rather than making any visually obvious change to the neg. Also the kodak technical sheet gave handier measurements for 300ml to 1L mixes which are the volumes I usually work with
2. Dilute the concentrate syrup to make a base working solution as follows: one part concentrate to three parts water, ie to make a 1 litre working solution use 250ml of concentrate and 750ml water
3. Dilution B 'working solution' then works on a 1:7 mixing ratio so to make a litre use 125ml of working solution and 875ml of water

This seemed to give me the most straightforward and more easily measurable solution ratio and a reasonable development time (even then it's quicker than most).

I hope that's of use to you. Good luck!