Iodophor Discovery – Cold Storage & Light Exposure
- Thread starter BrissyBrew
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bindi
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After read this thread I have transfered my phosphoric acid [I like and prefer it] to a dark containers and out of any light, now heat, that's hard to do in Qld, same issues must apply for Phos 
I am not an expert.
I am not an expert.Tseay
Well-Known Member
Came across an artcle on a US site. Had this to say about Iodophor storage:
Regarding iodophor that has been diluted to a working solution, Dr. Landman explained that there are a number of things that work to degrade the products' efficacy. Chlorine and protein load were the two mentioned first, but Dr. Landman agreed that both sunlight and exposure to the atmosphere may very well be factors. Iodophor is very stable in it's undiluted form, but will begin to degrade, (albeit slowly), once it has been diluted to a working solution. In either case, it is far more stable than chlorine which begins to degrade immediately upon being manufactured. The color of the iodophor solution is a rough guide to it's effectiveness as a sanitizer. If the solution still has its amber color, it is most likely still active. It is recommended that a fresh solution should be mixed when the color fades or after 24 hours.
I asked about contact time and was told that 60 seconds was adequate. Dr. Landman went on to comment that it is not necessary to keep the surface completely immersed in the solution for 60 seconds. He explained, by way of example, that to sanitize a 5 gallon carboy there is no need to prepare 5 gallons of solution. Swishing a gallon of solution, (at 12.5 ppm), around the inside of the carboy for a minute or two will do the job.
Complete article can be found at :
http://www.bayareamashers.org/content/maindocs/iodophor.htm
T
Regarding iodophor that has been diluted to a working solution, Dr. Landman explained that there are a number of things that work to degrade the products' efficacy. Chlorine and protein load were the two mentioned first, but Dr. Landman agreed that both sunlight and exposure to the atmosphere may very well be factors. Iodophor is very stable in it's undiluted form, but will begin to degrade, (albeit slowly), once it has been diluted to a working solution. In either case, it is far more stable than chlorine which begins to degrade immediately upon being manufactured. The color of the iodophor solution is a rough guide to it's effectiveness as a sanitizer. If the solution still has its amber color, it is most likely still active. It is recommended that a fresh solution should be mixed when the color fades or after 24 hours.
I asked about contact time and was told that 60 seconds was adequate. Dr. Landman went on to comment that it is not necessary to keep the surface completely immersed in the solution for 60 seconds. He explained, by way of example, that to sanitize a 5 gallon carboy there is no need to prepare 5 gallons of solution. Swishing a gallon of solution, (at 12.5 ppm), around the inside of the carboy for a minute or two will do the job.
Complete article can be found at :
http://www.bayareamashers.org/content/maindocs/iodophor.htm
T
