Little puzzle for you, AGFA APX 400

[Ronald_H]

Ok, I shot AGFA APX 400 at ISO 100 (my bad). It's 120 format and expired in 2003. It's 24 degrees Celcius out here and I do have HC-110. Can make any dilution from syrup. I use standard Paterson tanks, plastic reels. Go!

 

[stillsilver]

The Massive Dev Chart has that at :
Solution C 7.5 min. 20c

Welcome to the site.

The MDC can be found on Digitaltruth.com

Mike

 

[GeorgesGiralt]

Hello !
IE100 is just two stop more than specified. Nothing to worry about with modern films.
IMHO, I would treat it as normal and get a little heavy negs but with plenty of detail on shadows areas. Nothing worth worrying about.
Remember to WEIGHT HC110 syrup and not measure it by volume.

 

[Ronald_H]

Why would I need to measue by weight?!? That I really don't understand. I take my info from the Covington HC-110 site btw.

Anyway, I guessed 9min in HC-110 'H' would do the trick (25% less time = one stop pull), taking into account age of the film. That is not compensated for temperature, I wanted to be on the safe side.

The negatives are drying now and frankly, look perfect

 

[GeorgesGiralt]

Because it's a thick syrup. And when you measure such a thing by volume, it sticks to the walls of the measuring cylinder and you get a false reading. Worse is that it will be different every time. So you can't be consistent. Well consistent enough for high dilutions.
Ask a chemist about that...
And to get back at the over exposed APX, all you'll get by treating it as normal would be slightly longer printing times. But full tonal range as the shadows had been properly exposed.

 

[brucemuir]

You can use a syringe with a flexible tube to pull the exact ml or cc you want of HC110 syrup.

 

[Ronald_H]

I make my dilutions with the help of a mall syringe, so that argument is rendered invalid. But I had to find out the hard way that when making developer in that manner I have to STIR before pouring the solution into the tank. Or that tap water drops considerably in temperatire after it has been running for a while in my appartment.

Needless, to say, it was not the first roll I developed, but it was an interesting puzzle with all those parameters off.