How much easier can it be explained?   You dilute the 35% in half to get it 
down to the 17.5%.   You then dilute that in half to get it down to the 8.75%.  
Then dilute in half yet again to get to the 4.375%.  When I say dilute it in 
half, you add the same amount of distilled water to whatever your peroxide mix 
measure is (i.e., one cup DW plus one cup of whatever % peroxide mix you have = 
a half diluted mix from what you started with).

You may not have the convenience of using the 16 oz bottle for mixing the whole 
thing up, but you can use it to store some of the diluted mixture.

Ruth

  ----- Original Message ----- 
  From: Dorothy Fitzpatrick 
  To: silver-list@eskimo.com 
  Sent: Wednesday, April 14, 2010 8:07 AM
  Subject: Re: CS>where is everyone?/..."TAITP~WBSF"?


  Sorry David this seems complicated to me (math moron that I am)  I have a 
sixteen ounce bottle (used formerly to house 3% store- bought HP) and I want to 
know how much 35% HP to put in if I fill it with DW.  It has to be really 
simple I'm afraid <lol> dee

  On 14 Apr 2010, at 05:01, David Bearrow wrote:

  > Oy. Look at it like this:
  > 35% = 100, divide both by 2
  > 17.5% = 50, divide both by 2
  > 8.75% = 25, divide both by 2
  > 4.375% = 12.5
  > 
  > What that mean? You take the 35% peroxide and mix in an equal amount of
  > water and it divides it in half making it 17.5%. If you started with 1/4 cup
  > of 35% peroxide mix in 1/4 cup water. This gives you 1/2 cup of 17.5%
  > peroxide. Mix in 1/2 cup of water to the 1/2 cup of 17.5% peroxide you just
  > made. This gives you 1 cup of 8.75% peroxide. Mix in 1 cup of water to the 1
  > cup of 8.75% peroxide you just made. This gives you 2 cups of 4.375%
  > peroxide. To me thats close enough to 3.5%.
  > 
  > David
  > 


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