DEKTOL mixing question

chris72 · Apr 28, 2011

Hi,
I have 1 old metal case of DEKTOL (Net Wt 1 LB 4 Oz *to make 1 U.S Gallon or 3,8 liters).
My question is how many grams of this for make 1 liters working solition (1+9)
Please tell me how to calculate?
Thank you,
George

heespharm · Apr 28, 2011

Divide weight of powder by 3.8 liters then by 10 and you got your answer

tkamiya · Apr 28, 2011

You don't want to do that.... Dektol powder is a compound - meaning mixture of different chemicals. If you divide it, there is no guarantee you get the same ratio of component chemicals. If you insist on doing it, you'll want to shake it up really well randomly first for best chance at getting it well mixed.

RalphLambrecht · Apr 28, 2011

George

Dektol stock solution is typically used 1+1, 1+2 or maybe 1+3, 1+2 being the most common, but never 1+9.
Also, it is recommended not to split the raw chemical into portions, because it is a mixture of several chemicals, and the mixture is not necessarily homogeneous. You are better off taking it all and making 3.8 liters of Dektol.

Rick A · Apr 28, 2011

After you have it mixed to make one gallon, divide it into smaller bottles. Fill them to the top and seal the bottles tightly. Store them in a cool dark place, and use as needed. Dektol is best used at 1+2, sometimes 1+1 or 1+3.

chris72 · May 16, 2011

Wt 1 LB 4 Oz = 571 grams?

bblhed · May 16, 2011

What everyone else id saying over and over, don't split it up, and 1+9? I use it at 1+3 to process film at the same times as D-76, 1+9 would take a really long time!

removed account4 · May 16, 2011

maybe the OP wants to process film in the dektol.
i have heard 1:4 4 mins, 1:7 7 mins, maybe it is also 1:9 9 mins ??

RalphLambrecht · May 16, 2011

That could be. Also, I use it 1+7 for paper negatives.

eSPhotos · May 16, 2011

chris72 said:
Wt 1 LB 4 Oz = 571 grams?

Close enough.
571/3.8 => 150g
You need 150g for a litre of water.
But as others said ... don't divide the powder.

eddie · May 16, 2011

How long has it been since they sold Dektol in metal?

Newt_on_Swings · May 16, 2011

forever lol, I think they have gone through at least 2 different pouch designs so far.

Yes and it is better to make it all at once and top bottles to the brim for storage. weighing out dry components wont work as the mix will ultimately have heavier elements settle on the bottom.

c.d.ewen · May 17, 2011

Newt_on_Swings said:
... weighing out dry components wont work as the mix will ultimately have heavier elements settle on the bottom.

Well, if you had said, "won't work perfectly", I'd agree

I picked up a 5 gal foil pack from a closed-up camera store, and frugally measure out 150g/L. The dry chemical is a dull beige color, rather than white (as fresh Dektol should be), and I did mix the crap out of it. I only use it for casual, non-archival prints, and it works fine for that purpose.

I guess most of you folks aren't Scottish Yankees

Charley

DEKTOL mixing question

Privacy & Transparency

Privacy & Transparency