Topic: LOMAD

[Jack Johnson]

Anyone ever try LOMAD? Homebrew, two-part developer that's supposed to have a long shelf life:

http://ascorbate-developers.blogspot.no/2012/02/lomad-diafine-clone.html?m=1

I may fall into the acronym's target audience.

[imagesfrugales]

Here's the recipe from Anchells darkroom cookbook for comparison purpose, using hydroquinone instead of Vit-C:

Solution A
Water (52°C) 750 ml
Sodium sulfite, anhydrous 35 gr.
Hydroquinone 6 gr.
Phenidone 0.2gr.
Sodium bisulfite 6 gr.
Cold water to make 1 liter

Solution B
Water 52°C 750ml
Sodium sulfite 65gr.
Borax 20gr.
Cold water to make 1 liter

for the lomad: I would skip the salicylic acid, it only has an impact on the pH. Use ascorbic acid and washing soda and adjust the pH to 7. Borax can be substituted by washing soda waterfree also 20 g/l. 0.1 g/l pot. bromide for part A seems to be very low to have any effect, if you have to much base fog it may be usefull to increase the amount to 0.5 or 1 g/l. I should try this developer myself, since I have everything at hand. I should go in my bathroom and fire up the scale. Over and out.

[imagesfrugales]

So, I made my own mix with the Diafine alternative of the cookbook but Vit-C instead of HQ. I will let stand til tomorrow and then we will see if it works at all and how. Before that I will not give the detailed recipe to prevent you from failure.

Reinhold

[imagesfrugales]

So, first good news, it works. I made a quick test, developing a fully exposed snippet of Tmax 400 at roomlight. 3 minutes part A and 3 minutes part B, fixed as usual. The snippet is all black with a good density. So we can be confident that it will also work with real pictures. So here's the recipe:

Part A

vitamin-C 15 g/l
washing soda waterfree 7,5 g/l
sodium sulfite 35 g/l
potassium metabisulfite 6 g/l
phenidon 0.3 g/l

pH: 6.8 (bingo!)


Part B

washing soda waterfree 20 g/l
sodium sulfite 65 g/l

pH: about 11 (another bingo)

I diluted in the given order. Phenidon may take some more time to dilute 100%? So we will see how it works with real images, if we get even development, base fog, film speed, grain, sharpness etc. ?

Best - Reinhold

[Jack Johnson]

So, I made my own mix with the Diafine alternative of the cookbook but Vit-C instead of HQ. I will let stand til tomorrow and then we will see if it works at all and how. Before that I will not give the detailed recipe to prevent you from failure.

Reinhold

A) You are a rock star
B) That would hardly prevent me from failure.

[imagesfrugales]

The story continues here:
http://www.filmwasters.com/forum/index.php?topic=6498.msg80786#msg80786

[jojonas~]

I should try this developer myself, since I have everything at hand. I should go in my bathroom and fire up the scale. Over and out.

this just made my day! again, glad to have you on board, Reinhold