Hydrogen Peroxide Dilution Chart
| You’ll find more hydrogen peroxide dilution charts here: |
Mixing 35% food grade hydrogen peroxide to get 3% hydrogen peroxide
To make a gallon of 3% peroxide: In a clean gallon container, combine 1 and ¼ cups of 35% food grade hydrogen peroxide with 14 and ¾ cups of water.
To make 3% hydrogen peroxide from 35% hydrogen peroxide, the general mixing guideline is: 1 part 35% hydrogen peroxide plus 11 parts water = 3% hydrogen peroxide. You can use this guideline with any quantity you need to mix.
Here’s the same thing I just said, but in the form of a Hydrogen Peroxide dilution chart:
Peroxide dilution chart for mixing 35% hydrogen peroxide with water to get 3% hydrogen peroxide
| USE THIS AMOUNT OF 35% HYDROGEN PEROXIDE | AND THIS AMOUNT OF WATER* | TO MAKE THIS AMOUNT OF 3% HYDROGEN PEROXIDE |
| 1 part | 11 parts | 12 parts |
| 1 and 1/4 cups | 14 and 3/4 cups | 1 gallon (16 cups) |
| 1 and 1/4 tablespoons | 3/4 cups + 2 and 3/4 tablespoons | 1 cup (16 tablespoons) |
| 1/4 cup + 1 tablespoon | 3 and 1/2 cups + 3 tablespoons | 1 quart (4 cups) |
I can’t think of a reason why you’d want to mix more than a gallon of 3% peroxide, but perhaps I’m missing something? (Please write and let me know if you mix larger quantities, I’d be curious to know what you use the large amount of 3% for. Seems to me it would be easier to use 35% for anything that needs that much???)
More “how-to” details, and how to make it easier to do…..
I use an empty gallon apple juice bottle which I’ve had for years. (It is glass. I consider glass to be acceptable for storing 3% hydrogen peroxide but NOT for 35%.)
To make measuring and mixing a gallon of 3% peroxide easier, do this:
- Make a gallon of 3% hydrogen peroxide, as described in the peroxide dilution chart, above, by mixing 1 and 1/4 cups of 35% food grade hydrogen peroxide with 14 and 3/4 cups of water. Measure it out.
- Use a permanent marker to make a mark on the outside of the bottle, where the level of the gallon of liquid fills the bottle up to.
- From here on out, you can make 3% hydrogen peroxide every time this bottle is empty like this: measure 1 and 1/4 cups of 35% hydrogen peroxide, and pour it into the empty bottle. Then add enough water to fill up the bottle, up to the line.
This eliminates having to measure and count out the 14 and ¾ cups of water each time!
* What kind of WATER?
In the hydrogen peroxide dilution chart, above, I just say “water”. But what kind of water?
That will depend on what you are planning to use the peroxide for. For most purposes, tap water will work.
Here is the exception: If you plan to use the peroxide as an oxygen supplement – to be ingested by anyone (including animals) – then you should consider using distilled water, or filtered water, if at all possible.
Any metals in water will combine with hydrogen peroxide. I’ve read that this is bad stuff to ingest. I’d like to know a lot more than I do about why, and what the level of risk is. I can’t add a lot to this, other than to say that I’ve read that this is risky. How risky I don’t know. But it does make some sense: peroxide is an oxidant. Oxidizing metal creates rust. Drinking rust particles doesn’t seem like a good idea.
I’ve also read that it is bad to ingest peroxide in combination with iron supplements. The reason is the same: iron is a metal.
If you plan to ingest peroxide, you can consider this.
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