One of these HC-110 questions again...

[p.giannakis]

Hi everyone,

I have been using HC-110, dilution H for some time now and like the results. I use 8ml of developer in 492ml of water in a 500ml tank.

Recently i had to throw away that tank as it broke. I have a smaller 300ml tank and i am thinking about using that more.

I know that i need a minimum of 6ml of HC-110 per film, which - for the 300ml tank - we are talking about 1:50 dilution.

Does anyone have any developing times for Kodak Tri-X and TMax-400 for 1:50 ? I haven't been able to find something. I expose the films at 400 ISO.

Thanks!

 

[kxl]

http://www.covingtoninnovations.com/hc110/


"Michael Gudzinowicz (on rec.photo.darkroom) recommends dilution H (syrup 1:63) for higher acutance. Development times are to be found by experiment, but are likely to be 50% to 100% longer than for HC-110 (B). I find that doubling the time for Dilution B is a good starting point."

 

[p.giannakis]

http://www.covingtoninnovations.com/hc110/


"Michael Gudzinowicz (on rec.photo.darkroom) recommends dilution H (syrup 1:63) for higher acutance. Development times are to be found by experiment, but are likely to be 50% to 100% longer than for HC-110 (B). I find that doubling the time for Dilution B is a good starting point."

Thank you,
I've been reading this page but what got me thinking is that it says "for dilution E add 50% more time of Dilution B"
That means Tri-X for 6 minutes and Tmax for 9.

Does that sound right? Such a big difference in developing times for two 400 ISO film?

 

[kxl]

Thank you,
I've been reading this page but what got me thinking is that it says "for dilution E add 50% more time of Dilution B"
That means Tri-X for 6 minutes and Tmax for 9.

Does that sound right? Such a big difference in developing times for two 400 ISO film?

Unfortunately, it's more or less a matter of experimenting between 50% to 100% longer than Dil. B. Good luck!

Reminder: the dilution also depends on whether you start with the syrup (in the US) or a bottle of concentrate (in Europe).

 

[Ko.Fe.]

http://www.digitaltruth.com/devchart.php?Film=&Developer=HC-110&mdc=Search&TempUnits=C

I do trust them.

Trix nine in twenty. Tmax is nine in twenty four.

 

[p.giannakis]

Trix nine in twenty. Tmax is nine in twenty four.

Wouldn't turn out a bit too grainy in 24 oC? IS there a way to convert it to 20 oC?

 

[Ko.Fe.]

I would add couple of minutes for 20.

 

[leicapixie]

My tank is 300ml.
i use 1:50 dilution, so 6cc's per to make 300ml.
It's not rocket science! There is leeway.
I use Kentmere 400 at 12~15 mins for 72~74*F.
My thermometer may be suspect! Consistent is the answer.
HP5+ at 8mins. Same temps and Dilutions.
Agitate 10" per 60", no agitate last 3mins.
Negs scan nicely on Canonscan.
Tri-X and T-Max should be on "Massive Development" Chart.
There is a blog on HC-110 that deals with Kodak films and HC-110.
Do what we all used to do!
Shoot a few frames and do a test.
Easy to cut out of a SLR, not a Leica M.!

 

[esearing]

HC110 is fairly Linear. 1:50 is 1.56x greater than 1:31 so multiply your time by 1.56 and round a little up or down. I like 2x + 1 minute longer when I use 1:63. I also prefer to change my agitation scheme to two minutes at higher dilutions.

 

[ABrosig]

HC110 is fairly Linear. 1:50 is 1.56x greater than 1:31 so multiply your time by 1.56 and round a little up or down. I like 2x + 1 minute longer when I use 1:63. I also prefer to change my agitation scheme to two minutes at higher dilutions.

I'm with you on the timing, but I change the agitation to VERY slow inversions over 10-12 seconds every three minutes. Find I get the best results that way.

 

[BernardL]

IS there a way to convert it to 20 oC?

See page 4 of:
http://www.ilfordphoto.com/Webfiles/2010712125850702.pdf
Generally adjust by 10% for each °C.

 

[roscoetuff]

Got to the same website KoFe links above. One of the tabs on the left will do the conversion for you if you put in the starting time and temp you have. You can then pick a temp and it will give you the time. Easy.

 

[p.giannakis]

Got to the same website KoFe links above. One of the tabs on the left will do the conversion for you if you put in the starting time and temp you have. You can then pick a temp and it will give you the time. Easy.

Wow! Thanks for that - i never noticed it!