>Champlin 16 was intended to be used 1 to 9 with water or, preferably, a 10% sodium sulphite solution. Mike, does that take care of your concerns?
Yes, at that dilution things start to make some more sense. The added sulfite stock can act as a restrainer, the HQ down to 5g/l, and the TEA would be keeping the pH in HQ's active range.
>I would be tempted to go back to 777 except that I probably won't be developing enough film to keep it viable.
>I know the Unblinking Eye thread on 777; in fact, the Instructions/time and temperature sheets that are posted there were my contribution to the discussion.
>At that time, I didn't have a scanner, so one of the college secretaries scanned it for me.
> I've always wondered why I wasn't given credit...Oh well, I wasn't one of the chosen few.
I am pleased that you initialted the post, and honoured to have met you, however albeit online.
>Mike, may I ask how you modified the 777 formula (Germain's if I remember correctly) given on the Unblinking Eye site?
Sorry, I was posting from memory, and forgot the every day developing agent metol. I do remenber explicitly sourcing ppd and glycin for mixing this up. It is Germains I have experimented happily with.
I have no leads on commercial sources of the 'real 777'
>I'm off for four days... with the volumes from The Complete Photographer on developer formulation, involving Harold Harvey that is the best thing I've ever read on the subject.
I have an old set of photographic encyclopedias from the mid 60's that has some Harvey articles in it. Not quite prescriptive enough to know what you get, but to understand why things go one way or the other as I recall.
my real name, imagine that.
Many years ago one of the major photographic magazines, either Modern Photography or Popular Photography, attempted to learn the identity of Tironamine-C. All they could find out was that it was a mixture of an amine with something else. So even if a source of chlorhydroquinone could be found the original formula for Champlin 16 couuld not be reproduced today.
Last edited by Gerald C Koch; 05-07-2013 at 11:24 PM. Click to view previous post history.
A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.
~Antoine de Saint-Exupery
Jim, I just started looking into "rolling my own" and the DCB (second edition) is my starting point. Is it really that bad? I am mainly interested in making relatively simple paper developers, fixers and washing aids.
Originally Posted by Jim Noel
Originally Posted by Mike Wilde
Only in the original formulation. The commercial D-76 would has less than 100g/L once it is in working solution.
Please keep us updated on this FG7 version, I am interested in trying it. Thank you.
Sponsored Ad. (Subscribers to APUG have the option to remove this ad.)
People on the internet have a habit of slamming books for even tiny errors which affect 0.01% of the readership, if that, and this creates the impression that these books are riddled with errors. Both the Darkroom Cookbook and the Film Developing Cookbook are fine books with more formulas and fewer errors than any comparable resource you can find out there. I bet you can make a working print developer from 99, or more likely 100% of the formulas published for this purpose in any edition of the DCB.
Originally Posted by Doc W
Trying to be the best of whatever I am, even if what I am is no good.
Hello Everybody, We're just back from a very pleasant if exhausting week at the Standard Schnauzer Club of America's National Specialty Show. So, please pardon my delay in replying.
Mike, I'm delighted to meet you, too. Where is Misissauaga,Canada? I. by the way, am in Galesburg, IL.
RidingWaves, I'll try to keep you updated on my progress (or lack thereof), but it may take some ti8me before I get things organized.
Hello yet again. Reading over the reply I just posted, I realized that I really must proof read more cerafulyl! And, Rudeofus, I've kind of gotten the impression that there are, indeed, a fair number of nay sayers on the internet...some of them well meaning, some just taking out their aggressions. Even so, and bearing in mind that the Net is filled with misinformation, I do find it a valuable source for ideas.
John - Mississauga is a city of 600,000 or so people that abutts the west end of Toronto.
Often this area is refered to in a larger sense as part of the GTA - Greater Toronto Area, which counts about 2.5-3million in population.
I am about 20 minutes from downtown Toronto, as long as the trip is not made in rush hour.
I have yet to google Galesburg, but have travelled through Illinois on holdays though the years. Not spectacularly different in the geography, though you might have a bit milder winters.
The GTA is not as sprawling as greater Chicagoland.
my real name, imagine that.
The quest for the 777 formula led me to my little Germain book and I have used his finegrain developer for years as my standard (yes, I've done Edwal 12). And it's an excellent developer for all the films I use.