df cardwell said:..... Formulary's PPD is virtually clear and dissolves easily by comparison.
Gerald Koch said:When contacted awhile back Bluegrass staunchly maintained that their product does not contain Glycin.
Peter Schrager said:Could someone please post the contact info to purchase 777? I would appreciate that
Peter
c6h6o3 said:Bag A dissolves very easily, but you have to get the water hotter than what they tell you in the instructions. Get it up to about 180 degrees. Mix the B bag at room temperature.
df cardwell said:well, test strip #2 looks promising
10% less development time, and the developer had been 'ripened'
densities are right in the target range for my diffusion enlarger
the grain is much finer ( not soft )
no significant loss of shadow speed, and the highlights are a little lower, indicating a slight shoulder ... way out around .... XII or XIII. There's no glycin in this stuff.
The point of this first roll is to see what the stuff WANTS to do, and design an adequate test to get the most from it. But I wouldn't hesitate to go shoot a job with it right now.
No, wait. No, I wouldn't. Let me get a couple dozen rolls through it over a month... then it can go to work. But if it stays consistent with what it's doing, I think it can unpack its bags.
Lee: I started with my normal time for Xtol 1+2 for TMY, with agitation 5 seconds every 5th minute. I'm twisting and inverting.
I want to share what's going on with this stuff because Harvey was a well respected writer and photographer back in the '30s and '40s. And since this has been around for a long time, it has an aura, and a lot of.... umm, aura.
I wouldn't be surprised if this is sort of a D25 kind of developer, getting an activity boost from the PPD. If you've used much D23 or D76, there's something familiar to it. I know this is all intuitve but that's the most accurate way for me to share data.
If you've got some experience and aren't thrown off by having to get a strange developer to give good results in a hurry, I'd say AT THIS POINT that it's worth trying.
If you're still on the learning curve, work with D76 for a hundred rolls or so, and then this won't be too weird.
My best guess as to what's in it ? Umm, PPD, Sulfite... some stuff from the bottom of a Froot Loops box and goodness knows what else. That's good enough for me.
Now to settle down and do some reliable testing.
df
Short of doing a qualitative analysis, I don't don't know how you can make these statements.df cardwell said:There's no glycin in this stuff.
...
I wouldn't be surprised if this is sort of a D25 kind of developer, getting an activity boost from the PPD.
PPD, when used as the sole developing agent, causes severe speed loss. To compensate for this there must be some other more active developing agent present. You certainly are not going to get an activity boost from PPD, quite the contrary. The traditional choice to gain activity in a PPD developer was Metol.df cardwell said:My best guess as to what's in it ? Umm, PPD, Sulfite... some stuff from the bottom of a Froot Loops box and goodness knows what else.
Gerald Koch said:PPD, when used as the sole developing agent, causes severe speed loss. To compensate for this there must be some other more active developing agent present. You certainly are not going to get an activity boost from PPD, quite the contrary. The traditional choice to gain activity in a PPD developer was Metol.
Gerald Koch said:Short of doing a qualitative analysis, I don't don't know how you can make these statements.
Gerald Koch said:PPD, when used as the sole developing agent, causes severe speed loss. To compensate for this there must be some other more active developing agent present. You certainly are not going to get an activity boost from PPD, quite the contrary. The traditional choice to gain activity in a PPD developer was Metol.
df cardwell said:As a matter of fact I will. 777 seems to be like a buffered D76 with finer/sharper grain and more speed.
Whatever was around in 1936-ish to have inspired Harvey ?
df
df cardwell said:To save anybody that wants to try this stuff, I'm shooting TMY at 400, and processing it at 68 degrees for 18 - 20 minutes, with agitation for 15 seconds at the beginning, and 5 seconds every 5th minute thereafter .df
Gerald Koch said:The Sease series is interesting, all the developers use the same amount of ppd and sulfite. The amount of Glycin varies. Sease #1 causes the most speed loss since it contains only ppd. Sease #4 causes the least speed loss but produces the most grain. Formulas #2 and #3 are intermediate.
The entire progression is
Speed loss #1 > #2 > #3 > #4
Graininess #1 < #2 < #3 < #4
Glycin (g/l) 0 1 6 10
Lachlan Young said:Maybe it is buffered D76 with the addition of ppd?
A modified version of Ansco 47 perhaps?
Defender 5 D perhaps? - with ppd
I don't know - anyone got some photo lab indexes from that period?
Has 777 been modified from when it was created? If it hasn't, thenit is possibly quite a simple formula with little to go wrong in it.
What can we say that is almost certainly in it? PPD obviously, Sodium Sulphite in some quantity almost certainly, and some Metol and Hydroquinone to keep the speed up? Borax too? FX10 is probably not too wide of the mark.
Lachlan
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