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Photographers' Formulary PMK Pyro-Metol Kodalk Developer for Black & White Film (Liquid) - Makes 50 Liters
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how long do these photo chemicals last? and is ...
how long do these photo chemicals last? and is there an expiration date?
According to the manufacturer, the shelf life on the Photographers' Formulary PMK Pyro-Metol Kodalk Developer for Black & White Film (Liquid) in the stock solution is indefinite and even partially filled bottles that are tightly closed will last for years.
Date published: 2022-10-25
According to information I found PMK Pyro slows ...
According to information I found PMK Pyro slows film speed. For example, Kodak Tri-X has EI 260. Question is should I treat film as ISO 260 when shoot? Or at box speed?
Your best bet is to run a clip test and shoot at various iso's to see which yields the best result, but shooting at 260 would probably work well.
Date published: 2021-02-18
If water is used as a stop bath, how many minutes ...
If water is used as a stop bath, how many minutes should it be agitated?
Photographers' Formulary does not list a time for how long one should use water as a stop bath after using the Photographers' Formulary PMK Pyro-Metol Kodalk Developer for Black & White Film (Liquid) - Makes 50 Liters. They say: "A plain water stop bath is excellent for all normal films and developers. Use a large volume of water and agitate roll and sheet film continuously." You can find more information on their tech sheet here. https://stores.photoformulary.com/content/01-5060.pdf
Date published: 2021-12-14
Why should I mix 1 liter if my Paterson tank is ...
Why should I mix 1 liter if my Paterson tank is 0.5L ?
According to the instructions for the , they state a working solution of PMK is One (1) Part "A" + Two (2) Parts "B" + 100 Parts of Water. You may mix any amount as long as the ratio remains the same. As an example, 10 mL A + 20 mL B + 1,000 mL of water will make approximately one liter of working solution. As such, if you only want 0.5 L of working solution, you would cut the above in half, which would be 5 mL A + 10 mL B + 500 mL of water.
Date published: 2021-02-22
After manifestation in PMK and fixation TF-4 and washing for 25 minutes, the Tri-x 400 film turned out to be slightly brown. This is normal?
Yes. The pyro developing agent (the P in PMK) produces a stain. This stain density varies depending upon several factors. My experience is with Ilford films in PMK. I have been using this for over 15 years. It is a great developer that prevents high value blocking. The age of the film has a strong influence over how much staining occurs. A great resource is Gordon Hutchins book on PMK.
Date published: 2018-08-26
I am trying to make 1 liter solution to develop two rolls of B&W film in a Paterson tank. The instructions indicate that it is one shot solution of 10ml A + 20mm B + 1 liter water. What does one shot solution mean? Does it mean that the solution should be used only once to develop the film? Thanks much in advance for any help.
Hi Jae,One shot means just that: use the developer once and then pour it down the drain. But know that with PMK, you need to put the developer aside after development in order to stain the film after it has been fixed. Then you toss it. And no stop bath, just water.I think that covers most of the quirks of PMK.Good luck!
Date published: 2018-08-26
Self teaching myself film development.Is this rapid fixer safe with PMK? Ilford Rapid Fixer (Liquid,1 Liter) I've read all the answers to the first question and they were helpful but in reading at the Photographers Formulary site I'm wondering if I need a different fixer.
Hi, acids should be avoided when processing film with Pyro PMK. I use an acid stop bath diluted at least twice the normal dilution, I have read stopping development by using 2 30sec water baths is recommended. Use Photographers Formulary alkaline fixer! Shake well before use and stir until not cloudy.
Date published: 2018-08-27