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Old 11-20-2007, 06:04 AM   #1
jay29
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What is the rule of thumb? One cap full per gallon or 5 gallons of water??? What should I use?
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Old 11-20-2007, 06:15 AM   #2
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that is about what I use but you want the water to take on an amber hue also.
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Old 11-20-2007, 06:15 AM   #3
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I generally use star san now, but I used to use iodophor. I believe the correct ratio was 1 capful for 2.5 gal. So if you are filling up a 5 gal bucket use 2 capfuls

 
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Old 11-20-2007, 07:00 AM   #4
jay29
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Thanks for the info! Why are you using star san now???
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Old 11-20-2007, 07:07 AM   #5
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.5oz = 3 teaspoons: 5 gallons
.25oz = 1.5 teaspoons: 2.5 gallons
.1oz = .6 teaspoon: 1 gallon

 
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Old 11-20-2007, 09:50 AM   #6
Bokonon
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Quote:
Originally Posted by jay29
Thanks for the info! Why are you using star san now???
I still have half a bottle of iodophor around, but I like to use star san because I can mix up 5 gal of it and keep it around practically forever. I keep it in a spare keg and just pull off a little bit when I need it. I also always have a spray bottle with it around for sanitizing things quickly.

 
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Old 11-20-2007, 04:06 PM   #7
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If your iodophore is getting old, you may need more than the 1 tablespoon per five gallons. Just use the color as your guide.


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Old 11-20-2007, 04:23 PM   #8
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No!

2 cap fulls per 5 gal.

As it turns out, the cap on a one liter bottle of iodophor has a capacity of ounce. This means that I was using a concentration of approximately 19 ppm of titratable iodine. To obtain an effective sanitizer, no more than 2 capfuls, (1/2 oz.), need be added to 5 gallons of water. This creates a solution at 12.5 ppm.

Also don't worry about the shelf life of undiluted iodine unless you keep it stored where it's exposed to sunlight.

I asked Dr. Landman about the "shelf life" of B-T-F Iodophor and he related a story about one of their distributors who had found a case of the product that had been forgotten for 5 years and returned it to the manufacturer. NCI tested the 5 year old product and found that it still met standards. This was, of course, undiluted iodophor that had been well packaged and protected from exposure to light, air etc.

here's the entire article and interview with Dr. Landman

http://www.bayareamashers.org/conten...s/iodophor.htm
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Old 11-20-2007, 08:20 PM   #9
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Yikes! I just noticed that I had "1 tablespoon per gallon" in my last reply, so I edited to change that. Two capfuls is equal to one tablespoon, and I find it much easier and neater to handle a tablespoon than the cap off the bottle. The cap is convenient if I don't have my measuring spoon handy, though.

And, I've observed a much more rapid drop in potency than stated in that article. I'm not measuring with any sophisticated equipment, other than my own eyes, but I had bottle of year old B-T-F. I had to use almost twice the amount to get the same color, and I did not notice any detrimental effect in the final product.


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Old 11-21-2007, 11:40 AM   #10
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How much rinsing (if any) would you guys generally do after you had sanitized with Iodophor?

I'm currently rinsing ALL my sanitized equipment after the Iodophor and now I'm wondering if I'm negating the sanitation or possibly risking contamination
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