Ordering Glycin..........

[Alan Johnson]

Glycin Developers for Film

David A. Goldfarb submitted a new resource: (there was a url link here which no longer exists) - Glycin Developers for Film I have not tried these, but since people are experimenting with Ansco 130 as a film developer, they seem to be of potential interest. These come from The Morgan & Morgan...

www.photrio.com

I still have this solution of glycin + TEA + water in propylene glycol which is now over 17 years old, stored in a film canister.
A few drops were placed in 30ml of 100g/L sodium carbonate solution and after 15 minutes a film leader placed therein was blackened. The idea of first reacting with TEA and water was copied from Gainer's method for dissolving metol in propylene glycol.

 

[Raghu Kuvempunagar]

Glycin Developers for Film

David A. Goldfarb submitted a new resource: (there was a url link here which no longer exists) - Glycin Developers for Film I have not tried these, but since people are experimenting with Ansco 130 as a film developer, they seem to be of potential interest. These come from The Morgan & Morgan...

www.photrio.com

I still have this solution of glycin + TEA + water in propylene glycol which is now over 17 years old, stored in a film canister.
A few drops were placed in 30ml of 100g/L sodium carbonate solution and after 15 minutes a film leader placed therein was blackened. The idea of first reacting with TEA and water was copied from Gainer's method for dissolving metol in propylene glycol.

That's very encouraging and provides a convenient way to make developers similar to GSD-10!

 

[John Wiegerink]

After reading some of the comments here I did a little teaching on the site. I got curious about keeping qualities of developers that contain Glycin. I first looked at Hubl's Paste and it surprised me. This is the recipe:

hot water (125F / 52C) 500ml
sodium sulfite 165g
glycin 135g

mix well - takes some time to get all the glycin to dissolve
then add

potassium carbonate, crystaline 625g
water to 1000ml

The reason it surprised me was how concentrated it is and the self life. Some of the people who used this developer said they had 3 + years of shelf life. They did say the developer turned from salmon color to almost tar color, but still worked just as well as fresh. Of course, you're talking about 135g of Glycin in one developer. That's a lot of Glycin!

 

[Alan Johnson]

LFA Mason, "Photographic Processing Chemistry" 1975 p120 notes that organic developing agents may be divided into two groups, depending on whether or not their oxidation products enhance or inhibit the development reaction. P-hydroxphenyl glycine is in the first group.
This appears to mean that glycin does not need any sulfite to develop film, although no such developer seems to exist, apart from one containing TEA whose action is not understood.

 

[eli griggs]

After reading some of the comments here I did a little teaching on the site. I got curious about keeping qualities of developers that contain Glycin. I first looked at Hubl's Paste and it surprised me. This is the recipe:

hot water (125F / 52C) 500ml
sodium sulfite 165g
glycin 135g

mix well - takes some time to get all the glycin to dissolve
then add

potassium carbonate, crystaline 625g
water to 1000ml

The reason it surprised me was how concentrated it is and the self life. Some of the people who used this developer said they had 3 + years of shelf life. They did say the developer turned from salmon color to almost tar color, but still worked just as well as fresh. Of course, you're talking about 135g of Glycin in one developer. That's a lot of Glycin!

Considering that 100 grams is the amount that Photographer's Formula sells, the basic formula above should be recalculated for an easy, quick mix, imo.

Such basic formulas should help smooth the compounding of popular mixes, bought at popular sources.

Again, my opinion!

 

[John Wiegerink]

Considering that 100 grams is the amount that Photographer's Formula sells, the basic formula above should be recalculated for an easy, quick mix, imo.

Such basic formulas should help smooth the compounding of popular mixes, bought at popular sources.

Again, my opinion!

I'm sure you could just "half" all the ingredients for a smaller batch. I think Photographers Formulary does sell larger amounts than 100g also. I don't plan on trying Hubl's Paste and only mention it in reference to the keeping qualities of Hubl's Paste.

 

[eli griggs]

I'm sure you could just "half" all the ingredients for a smaller batch. I think Photographers Formulary does sell larger amounts than 100g also. I don't plan on trying Hubl's Paste and only mention it in reference to the keeping qualities of Hubl's Paste.

Sure you can make small amounts, but why bracket the formula when it’s just as easy, once it’s figured out, to use the 100 gram packet to make a long lasting solution.

 

[John Wiegerink]

Sure you can make small amounts, but why bracket the formula when it’s just as easy, once it’s figured out, to use the 100 gram packet to make a long lasting solution.

Well, two reasons for halving or even quartering a developer is: 1. It's new to you and you're just trying it out. 2. You don't use it regularly so you don't want a bigger batch to die on the shelf.

 

[eli griggs]

Well, two reasons for halving or even quartering a developer is: 1. It's new to you and you're just trying it out. 2. You don't use it regularly so you don't want a bigger batch to die on the shelf.

The long life of mixed one hundred grams of Ansco 130, vs. the cost over that strong, long life works out to be little more than pennies and the convenience in the darkroom, imo, makes it easier to keep it in play.

Divide if you must, but if, like me, you use but one paper develope, it’ll go fast enough in use.

 

[John Wiegerink]

The long life of mixed one hundred grams of Ansco 130, vs. the cost over that strong, long life works out to be little more than pennies and the convenience in the darkroom, imo, makes it easier to keep it in play.

Divide if you must, but if, like me, you use but one paper develope, it’ll go fast enough in use.

I agree when it comes to Ansco 130 and I only mix the full amount or even twice that at times. I was talking about a half batch of something like Hubl's Paste as a "test run" type thing to see if one really likes it or not. I like Ansco 130 so it's a full batch for me.