HC110 dilution -- confusion

Hi
I have earlier (some years ago) used D76 as my main developer, but decided to switch to HC110.
I have now bought 1 liter of HC110 (from macodirect.de), and I'm a bit confused about how to dilute it.
I have read that there is a US (syrup) version that dilutes 1+3 to a solution B stock solution, and another EU version that are less strong and dilutes 1+9 to a solution B stock solution.
And now I find it quite difficult to see which one we are talking about - looking at the label below.


Anybody who can point me in the right direction (I plan to use it with Tri-x 400, Tmax 100 and 400)

Thanks
Michael

Have a look at this page http://www.covingtoninnovations.com/hc110/

You have bought the US version. EU version was packager in half liter bottle and is no more available.

Tanks - I suspected the US Syrup version
/Michael

isfoto said:

Tanks - I suspected the US Syrup version
/Michael

Click to expand...

Ok, but then I don't understand what the 1+3 for B in the first message means ? Or was that a typo and should it have been 1+31? I think A, B, etc.. Are WORKING solutions, not stock as mentioned in the first message.

Stefan

Verstuurd van mijn GT-P7510 met Tapatalk

Do not mix up a working solution but leave it as a syrup as it will then last for years.

Best way to work is buy a syringe and mix up a one-shot solution whenever you want to process. You use the syringe to extract the developer, squirt it into the developer and then use the developer solution to get all of the HC110 out buy filling the syringe 3 times with the working developer solution and then squirting it back in to the working solution.

For Dilution B you want 8ml HC110 to 300ml of water (1 x 35mm reel) or 15ml HC110 to 500ml of water (1 x roll film reel).

Bests,

David
www.dsallen.de

I also find (there was a url link here which no longer exists) article very helpful

gliderbee said:

Ok, but then I don't understand what the 1+3 for B in the first message means ? Or was that a typo and should it have been 1+31? I think A, B, etc.. Are WORKING solutions, not stock as mentioned in the first message.

Stefan

Verstuurd van mijn GT-P7510 met Tapatalk

Click to expand...

Stefan:

The old US instructions for HC110 set out two different methods of getting to dilution B (1+31).

The second method is/was the same as shown on those new instructions - just mix it 1 part concentrate plus 31 parts water (the simple way).

The first method is/was a two step method involving first making an intermediate stock solution, and then subsequently diluting that intermediate stock solution 1 + 3 for dilution B.

The 1 + 3 "message" you refer to is just the incomplete 2nd half of those two step instructions.

The two step instructions do make sense if you are making big batches of developer that are going to be used quickly, like in commercial big tanks or school darkrooms.

The one step instructions are better for most, provided you don't mind dealing with small quantities (~6 ml per roll) of the thick concentrate syrup.

EDIT: and I too recommend Jason Brunner's HC-110 Made Simple article linked to by naeroscatu.

naeroscatu said:

I also find (there was a url link here which no longer exists) article very helpful

Click to expand...

Thank you for posting. And also thank you Jason for original article.

Karl-Gustaf