Tri-x Developer

[clubgrit]

Yes, I process them all at 20% ...

Well, I use a Jobo processor, so that makes it easier. I just pour in water into the receptacle, then pour in ice to make the water temperature go down. After all the ice melts, it settles at around 15 degrees, and I turn on the machine to bring it up to 20 degrees, after which it regulates it at that temperature.

I could of course keep lots of cold water in the refrigerator. But my better half scolded me and won't let me buy another refrigerator :kok:, and I obey.

Having the machine helps maintain consistency, in temperature and agitation. It's a luxury, but I do process many rolls sometimes (like 10 to 15 in one sitting, usually MF 120 which has only 10 or 12 shots in each roll), and that's when the machine is a great help, I can do other things ...



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[enghong17]

Are you using Microphen/Perceptol at 20degC? Mind sharing your method of cooling the solution down to 20C with us?

I used to use ID-11 but found that 'tropicalizing' HC-110 was a much better solution. I use HC-110 and develop Tri-X at ISO 400, 11 minutes in local water temperature (about 28C). Dilute 1:100.

You can use water at 18degC to mix with the chemicals. It will give a roughly 20degC solution. Thats what i used to do.

 

[Bee Hedge]

Ilfotec DD-X. I use it all the time
Alternatively, HC110 is a good choice too.

 

[sloth]

Yes, I process them all at 20% ...

Well, I use a Jobo processor, so that makes it easier. I just pour in water into the receptacle, then pour in ice to make the water temperature go down. After all the ice melts, it settles at around 15 degrees, and I turn on the machine to bring it up to 20 degrees, after which it regulates it at that temperature.

Having the machine helps maintain consistency, in temperature and agitation. It's a luxury, but I do process many rolls sometimes (like 10 to 15 in one sitting, usually MF 120 which has only 10 or 12 shots in each roll), and that's when the machine is a great help, I can do other things ...

.

Ah, I understand. I agree, if I had that many rolls I would go nuts trying to do them all by hand especially in my small tank which only takes a single 120 reel at one go. I actually pack two 120's onto that reel since there is space. Thanks for sharing your method

You can use water at 18degC to mix with the chemicals. It will give a roughly 20degC solution. Thats what i used to do.

Great! So assuming say, 1+1 dilution - 18C water and 28C chem? Or do I need colder water?

For small dilutions like my HC-110 Dil H, it's easy, a few ml of chem won't change the temp of the water much. I haven't figured out what's a good temp for the water when using 1+1 though.

 

[enghong17]

Great! So assuming say, 1+1 dilution - 18C water and 28C chem? Or do I need colder water?

For small dilutions like my HC-110 Dil H, it's easy, a few ml of chem won't change the temp of the water much. I haven't figured out what's a good temp for the water when using 1+1 though.

I think you need to arga arga. You may not get 20 degC so just compensate using the charts of your developer. After a few tries, you may find the correct temp of the water(may not be 18degC). I have always been developing at 20degC (in the past, long time never touch darkroom stuff liao), think someone told me that temp gives the best contrast but do google around for different solution's various optimal temperature. The data sheet may contain that info.

 

[alansoon]

I soup my Tri-X in HC110, Dilution B. 20 degrees celsius, 7 mins. 1 full minute of agitation, and 5 flips of the wrist every 30 seconds. Seems to do the trick.