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#1
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Rodinal
Hi all,
Rodinal is not available in Turkey. I believe it is because in part Agfa's low profile marketing strategy. Anyway, I read a lot about Rodinal and decided to try it. I bought some rodinal in the U.S and am ready to give it a shot. It is half a liter bottle of Rodinal. I was hoping that it has a long shelf life like the T-Max developer I mainly use and bought the larger bottle. T-Max developer has a shelf life of 2 years in proper conditions. As I do not develop not more than 1-2 rolls of film in a week, shelf life is important to me. In the leaflet of rodinal, it says once the original bottle has been opened, the stock will keep for 6 months. I know Rodinal is very concentrated like the T-Max and I am wondering if keeping the stock rodinal in air tight brown glass bottles (trying not to leave any air in the bottles by moving the stock in smaller bottles as it is consumed) will help extend the life of stock rodinal over 6 months. I have another question. I use 300 ml of working solution to develop 35 mm. films. the 1+50 dilution requires really little amounts of stock developer. Is there a threshold for the stock amount to be used, any minumum limits? Thank you all for helping me. Kind regards, Alparslan |
#2
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Rodinal
Rodinal is a very long lasting dev - years.
In the past, when I used it (it's not available in Brazil, also - same Agfa problem as in Turkey) I used an hypodermic syringe and a thick needle through the (then, don't know nowadays) rubber cap to take 5cc out of it and solve in 250cc of water. Jorge "Hektor Gonzal" wrote in : Hi all, Rodinal is not available in Turkey. I believe it is because in part Agfa's low profile marketing strategy. Anyway, I read a lot about Rodinal and decided to try it. I bought some rodinal in the U.S and am ready to give it a shot. It is half a liter bottle of Rodinal. I was hoping that it has a long shelf life like the T-Max developer I mainly use and bought the larger bottle. T-Max developer has a shelf life of 2 years in proper conditions. As I do not develop not more than 1-2 rolls of film in a week, shelf life is important to me. In the leaflet of rodinal, it says once the original bottle has been opened, the stock will keep for 6 months. I know Rodinal is very concentrated like the T-Max and I am wondering if keeping the stock rodinal in air tight brown glass bottles (trying not to leave any air in the bottles by moving the stock in smaller bottles as it is consumed) will help extend the life of stock rodinal over 6 months. I have another question. I use 300 ml of working solution to develop 35 mm. films. the 1+50 dilution requires really little amounts of stock developer. Is there a threshold for the stock amount to be used, any minumum limits? Thank you all for helping me. Kind regards, Alparslan |
#3
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Rodinal
Jorge -- whatever happened to the CCS for the LEDs?
Jack "Jorge Omar" wrote in message ... Rodinal is a very long lasting dev - years. In the past, when I used it (it's not available in Brazil, also - same Agfa problem as in Turkey) I used an hypodermic syringe and a thick needle through the (then, don't know nowadays) rubber cap to take 5cc out of it and solve in 250cc of water. Jorge "Hektor Gonzal" wrote in : Hi all, Rodinal is not available in Turkey. I believe it is because in part Agfa's low profile marketing strategy. Anyway, I read a lot about Rodinal and decided to try it. I bought some rodinal in the U.S and am ready to give it a shot. It is half a liter bottle of Rodinal. I was hoping that it has a long shelf life like the T-Max developer I mainly use and bought the larger bottle. T-Max developer has a shelf life of 2 years in proper conditions. As I do not develop not more than 1-2 rolls of film in a week, shelf life is important to me. In the leaflet of rodinal, it says once the original bottle has been opened, the stock will keep for 6 months. I know Rodinal is very concentrated like the T-Max and I am wondering if keeping the stock rodinal in air tight brown glass bottles (trying not to leave any air in the bottles by moving the stock in smaller bottles as it is consumed) will help extend the life of stock rodinal over 6 months. I have another question. I use 300 ml of working solution to develop 35 mm. films. the 1+50 dilution requires really little amounts of stock developer. Is there a threshold for the stock amount to be used, any minumum limits? Thank you all for helping me. Kind regards, Alparslan |
#4
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Rodinal
John
It's going, albeit slowly. I already have all the LEDs, the optical front silvered mirrors for the lightbox are cut to size, monday I will have the LEDs mounting plate ready. Then I can start the first preliminary tests (light eveness, etc) before assembling the light source in the enlarger head in place of the lamp. Jorge "John Walton" wrote in : Jorge -- whatever happened to the CCS for the LEDs? Jack |
#5
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Rodinal
Hektor Gonzal wrote:
Hi all, Rodinal is not available in Turkey. I believe it is because in part Agfa's low profile marketing strategy. Anyway, I read a lot about Rodinal and decided to try it. I bought some rodinal in the U.S and am ready to give it a shot. It is half a liter bottle of Rodinal. I was hoping that it has a long shelf life like the T-Max developer I mainly use and bought the larger bottle. T-Max developer has a shelf life of 2 years in proper conditions. As I do not develop not more than 1-2 rolls of film in a week, shelf life is important to me. Seen this? http://www.photo.net/bboard/q-and-a-...?msg_id=004r8U I know alot of you might have, here it is just in case it provides some use... |
#6
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Rodinal
On Mon, 22 Mar 2004 13:18:52 -0800, "Alparslan"
wrote: "Jorge Omar" wrote in message . 4... Rodinal is a very long lasting dev - years. In the past, when I used it (it's not available in Brazil, also - same Agfa problem as in Turkey) I used an hypodermic syringe and a thick needle through the (then, don't know nowadays) rubber cap to take 5cc out of it and solve in 250cc of water. Jorge Hi, then, are suggesting 10 ml. is not the minimum limit per roll of 35 mm. film no matter how much solution there is? Just trying to clarify. I am bit confused as there are different claims about the minimum amount. Meanwhile I will use 10 ml. minimum to be on the safe side. Regards. Rodinal is often used in very low concentrations. This tactic is useful in limiting highlight density and contrast in certain films, also useful in stand developing to increase edge effects for acutance. For instance at 1:200 for 120 film I would use about 2 1/4 cc to 15 oz water, agitate for 1 minute then let stand for the next hour with no agitation. Contrast is controlled by changing the concentration by careful degrees until the best results are obtained. Rodinal seems to have an unlimited capacity to develop even at very low concentration, though I'm sure there is a practical limit somewhere. |
#7
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Rodinal
Alparslan wrote:
Hi, then, are suggesting 10 ml. is not the minimum limit per roll of 35 mm. film no matter how much solution there is? Just trying to clarify. I am bit confused as there are different claims about the minimum amount. Meanwhile I will use 10 ml. minimum to be on the safe side. Regards. 10ml per roll is overkill. The 10ml recommendation Agfa gives seems to be mostly based on them wanting to sell Rodinal. You can safely use 5ml. I get consistent results with 4ml Rodinal + 300ml water (1+75). Cheers, Tobias |
#8
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Rodinal
I've NEVER used the 10cc minimum!
And I have a relative that was a pro photographer (nowadays he's a pro videomaker) that used only Rodinal and never said anything regarding the 10cc minimum. Agfa wants to sell more Rodinal... Jorge "Alparslan" wrote in : Rodinal is a very long lasting dev - years. In the past, when I used it (it's not available in Brazil, also - same Agfa problem as in Turkey) I used an hypodermic syringe and a thick needle through the (then, don't know nowadays) rubber cap to take 5cc out of it and solve in 250cc of water. Jorge Hi, then, are suggesting 10 ml. is not the minimum limit per roll of 35 mm. film no matter how much solution there is? Just trying to clarify. I am bit confused as there are different claims about the minimum amount. Meanwhile I will use 10 ml. minimum to be on the safe side. Regards. |
#9
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Rodinal
"Jorge Omar" wrote in message ... Rodinal is a very long lasting dev - years. In the past, when I used it (it's not available in Brazil, also - same Agfa problem as in Turkey) I used an hypodermic syringe and a thick needle through the (then, don't know nowadays) rubber cap to take 5cc out of it and solve in 250cc of water. Jorge Hi, then, are suggesting 10 ml. is not the minimum limit per roll of 35 mm. film no matter how much solution there is? Just trying to clarify. I am bit confused as there are different claims about the minimum amount. Meanwhile I will use 10 ml. minimum to be on the safe side. Regards. |
#10
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Rodinal
"Alparslan" wrote
Hi, then, are suggesting 10 ml. is not the minimum limit per roll of 35 mm. film no matter how much solution there is? Just trying to clarify. I am bit confused as there are different claims about the minimum amount. Meanwhile I will use 10 ml. minimum to be on the safe side. Regards. I don't care how long a 500ml bottle of Rodinal will last. If I had that much and used it that little I'd put it into 4, 125ml brown Boston Rounds equipped with Polycone or Polyseal caps. No one has mentioned the film to be processed. I've not run tests but my understanding is that high speed films require more chemistry than slow speed films. An aside: FX-1 results have been reported to be very nearly the same as Rodinal's. I think both can be considered high ph, very active, compensating developers and the more compensating the higher the dilution. I'm with you on the amount of chemistry although 10ml may be more than enough for most occasions. I'd steer clear of the give or take a .1 or .2 ml. for the purpose of contrast control. After all the amount of silver to be reduced will vary from roll to roll. Likely the best approach is to vary the dilution. Using an oversize tank has been suggested and one I've adopted when using FX-1. Dan |
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