reuse of chemicals
Posted: Mon Jul 27, 2015 12:43 am
Hello All
Since i am starting developing 4x5 on paterson tanks (both color and B&W) , considering that for 4x5 processing the tank needs to be filled up ( 1 liter)
i wonder if the reuse of chemicals (both for C41 and B&W) is calculated based on how many sheets of film i have developed or how many times you filled the tank , therefore you do a cycle of processing ... for example: if i process only 1 sheet ? (i guess the first assumption is based on the fact that there is reaction between film and the chemical , reaction consume the chemicals capabilities after "enough" film have been put in contact with it ; the second assumption is based on perhaps the fact loading the chemical in the tank expose it to air , light etc... or perhaps is based on my doubts only .
also: what is the ratio between rolls and sheet of 4x5 ? (i am asking because chemicals manufactures always mention how many reels the product can process and never mention sheets )
thanks!
g
Since i am starting developing 4x5 on paterson tanks (both color and B&W) , considering that for 4x5 processing the tank needs to be filled up ( 1 liter)
i wonder if the reuse of chemicals (both for C41 and B&W) is calculated based on how many sheets of film i have developed or how many times you filled the tank , therefore you do a cycle of processing ... for example: if i process only 1 sheet ? (i guess the first assumption is based on the fact that there is reaction between film and the chemical , reaction consume the chemicals capabilities after "enough" film have been put in contact with it ; the second assumption is based on perhaps the fact loading the chemical in the tank expose it to air , light etc... or perhaps is based on my doubts only .
also: what is the ratio between rolls and sheet of 4x5 ? (i am asking because chemicals manufactures always mention how many reels the product can process and never mention sheets )
thanks!
g