There will be dissolved silver in the used developer. I replenish my D23 and over time there's noticeable buildup of dissolved silver, more greyish than black, which settles to the bottom.
Thanks xkaes
I have been trying to do process of elimination on this one. I thought it might have been the film flaking off at first but then I developed another film brand and still got them I then checked the tank itself and it checked out all right. Made another batch of D23 with the same chemicals, same specks. The one and only thing that tells me it may not be a chemical issue is that when I put that first roll through that batch of chemistry there were no specks at all. Only after developing that very first roll then they appear Something changed at that point and I don't know what that may have been.
It's Gremlins I tell ya!
Yea, it's a little lumpy sometimes. Fairly fresh, it should break apart without too much effort (no hammers), but the clumps get harder with age, and hammers may be required. Not as bad a potassium bromide.
There will be dissolved silver in the used developer. I replenish my D23 and over time there's noticeable buildup of dissolved silver, more greyish than black, which settles to the bottom.
Good to know. Sodium carbonate will be a purchase at some point when I get to making up some Dektol.Lots of chemicals absorb atmospheric water, even if the storage container is very good, as fresh air enters each time it's opened. Sodium carbonate is probably the best known to photographers. I discovered that my potassium carbonate, which hasn't changed its "powderyness" has to be used at 1.26 times the formula weight, despite being in quite good storage container with tight fitting lid.
Lots of chemicals absorb atmospheric water, even if the storage container is very good, as fresh air enters each time it's opened. Sodium carbonate is probably the best known to photographers. I discovered that my potassium carbonate, which hasn't changed its "powderyness" has to be used at 1.26 times the formula weight, despite being in quite good storage container with tight fitting lid.
The anhydrous carbonate (MW 106) will convert to the monohydrate (MW 124) in the presence of moisture. Therefore, my threshold is a factor of 1.17. The chemical dealers in my area sell it in plastic bags...
Yea, it's a little lumpy sometimes. Fairly fresh, it should break apart without too much effort (no hammers), but the clumps get harder with age, and hammers may be required. Not as bad a potassium bromide.
do you think the alkalinity of the Sulphite has deteriorated
I added a half tea-spoon of the Sodium Carbonate anhyd to a mix of D23 and got shorter times after diluting it. Would it 'Change' the characteristics of the D23 ?
I use D23 1:1. Would these things show up in a one-shot solution?
I use D23 1:1. Would these things show up in a one-shot solution?
As long as it's kept reasonably dry, it doesn't change. ........
In the case of sodium sulphite, if the clumping is caused by some atmospheric water absorption, might that water enable the sulphite to oxidise to sulphate (as it does in solution)?
In the case of sodium sulphite, if the clumping is caused by some atmospheric water absorption, might that water enable the sulphite to oxidise to sulphate (as it does in solution)? As I've written before, I will get some fresh sodium sulphite for developer mixing and use the old stuff for paper rinse aid.
I received my chemicals from Artcraft. The metol and the sodium metaborate came in a dark container while the sulfite came in a white one. All containers were wrapped with black tape? Is it normal for the metaborate to be clumpy? The other two containers don't make any sharp sounds when shaking them.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?