Tri-X (400TX) and HC-110 B

david b · Sep 13, 2005

I am asking this for a friend who wants to develop his Tri-X (shot at 400) in HC-110 B

Is the time really 3.75 minutes? The massive dev chart is not much help so I am looking for a real world answer.

Thanks.

df cardwell · Sep 13, 2005

You might try a greater dilution ( 1+63 from stock, or twice the dilution of B )
for 12 to 14 minutes. Test it.

Short development times are not easy to work with... the 3 3/4 might BE right, but REALLY not practical.

gandolfi · Sep 13, 2005

I use HC110 dil B at about 5min. 6 if the film was exposed in low light

Gerald Koch · Sep 13, 2005

http://www.covingtoninnovations.com/hc110/ website lists development times for many films in HC-110. It also suggests using twice the dilution B development time for the unofficial dilution H time.

David Brown · Sep 13, 2005

There have been threads on this and other forums about the published times for the "new" Tri-X being wrong. On Kodak's website, however, the tech data for HC-110 has the "old" numbers:

http://www.kodak.com/global/en/professional/support/techPubs/j24/j24.jhtml#003

which is 7 1/2 minutes at 68 degrees for "roll film" Tri-X. There are also the "new" numbers on the same chart.

I've been using the old numbers. If you or your friend is still uncertain, one can't go wrong with D76 for Tri-X.

Cheers

David

BradS · Sep 13, 2005

In my experience, the number Kodak has published for the 'new' Tri-X in HC-110B is a little too short. Uneven development isn't really the problem either; although this depends to some degree, I suppose, on agitation method (I typically do 3-4 inversions every 30 seconds). The problem is that you don't get enough density in the dark areas. You will get marginally printable negs but,will probably be happier with slightly longer processing times.

Try 5-6 minutes.

Donald Miller · Sep 13, 2005

I have heard others say that the old times work for the new emulsion.

I can't say since all I have is the old emulsion. My tests on the old emulsion were EI 200 and N Dev at six minutes fifteen seconds (HC110 dil B) in tray development (68 degrees) gave me a Zone VIII density of 1.15 above FB+fog.

JHannon · Sep 13, 2005

I have just kept the same time (6min) at EI 250. I have used both the old and new emulsion. As Covington's site suggests, I think the 3 min time is a mistake on Kodak's part. It sounds more like the Dil A time...

boc · Sep 13, 2005

I've had great success with 320TXP in HC-110 1:50 for 7mins in a JOBO with constant agitation. Not 400TX I know, but I shoot them both at 200 so it may be of some use if you're doing constant agitation.

Michel Hardy-Vallée · Sep 30, 2024

Revisiting a very old thread, because it's still the one that pops up first in search engines.

I'd like to add to the record that Kodak's time of 3min 45s for 400TX is absolutely fine.

I too was scared by the short dev time, but I tried it on a 120 roll I shot this weekend, and it looks exactly like my other rolls processed in comparable developers.

Whenever I can, I'll post some pictures.

Alex Benjamin · Sep 30, 2024

Michel Hardy-Vallée said:
Revisiting a very old thread, because it's still the one that pops up first in search engines.

I'd like to add to the record that Kodak's time of 3min 45s for 400TX is absolutely fine.

I too was scared by the short dev time, but I tried it on a 120 roll I shot this weekend, and it looks exactly like my other rolls processed in comparable developers.

Whenever I can, I'll post some pictures.

That is strange. Not only have I read numerous times that the Kodak time was a mistake, but Ilford lists 6:30 as a developing time for Tri-X (EI 400) in Ilfotec-HC, which is essentially the same as the older version of HC-110.

Hunter_Compton · Oct 1, 2024

I've found through shooting many rolls of Tri-X and developing them in HC-110B, that 3.75 is too short, my normal development time is 6 minutes at 68f in that dilution. However, the difference between 3.75 and 6 minutes isn't too different. 3.75 minutes is almost entirely within the induction time (the time taken to start development), so depending on what contrast index you're looking for and what your intended output is (prints vs scan) you may not consider the short time inferior.

npl · Oct 3, 2024

6.5min also worked for me to get "normal" contrast negatives at box speed. I'm curious to see the negatives souped for less than 4min

Louis Nargi · Oct 3, 2024

6.5 min worked for me with my 35mm tri-x and 5.5 min with my 120 tri-x

Michel Hardy-Vallée · Oct 7, 2024

Here are some quick shots.

400TX 6x7 with yellow filter in HC-110b for 3.75 mins at 20C, printed on Kentmere VC select.

Nothing out of the ordinary, the negatives print absolutely normal.

otto.f · Oct 7, 2024

6.5’ indeed at 68F or 20C sharp

Tri-X (400TX) and HC-110 B

david b

df cardwell

gandolfi

Gerald Koch

David Brown

BradS

Donald Miller

JHannon

boc

Michel Hardy-Vallée

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Hunter_Compton

npl

Louis Nargi

Michel Hardy-Vallée

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Tri-X (400TX) and HC-110 B

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