Hydrogen Peroxide Dilution Chart
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.
Heres 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 cant think of a reason why youd want to mix more than a gallon of 3% peroxide, but perhaps Im missing something? (Please write and let me know if you mix larger quantities, Id 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 Ive 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. Ive read that this is bad stuff to ingest. Id like to know a lot more than I do about why, and what the level of risk is. I cant add a lot to this, other than to say that Ive read that this is risky. How risky I dont know. But it does make some sense: peroxide is an oxidant. Oxidizing metal creates rust. Drinking rust particles doesnt seem like a good idea.
Ive 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.
Site link for the above ^^^^
http://www.using-hydrogen-peroxide.com/peroxide-dilution-chart.html
Mixing charts for gardening with hydrogen peroxide
If you want to start gardening with hydrogen peroxide, you need to know how much peroxide to use. Here are charts to tell you how much!
To water or mist plants, to soak seeds, to add to water used to wash sprouts:
TO THIS AMOUNT OF WATER | ADD THIS AMOUNT OF 3% HYDROGEN PEROXIDE | --OR-- ADD THIS AMOUNT OF 35% HYDROGEN PEROXIDE |
1 cup | 1 and 1/2 teaspoons | 7 to 10 drops |
1 quart | 2 tablespoons | 1/2 teaspoon |
1 gallon | 1/2 cup | 2 teaspoons |
5 gallons | 2 and 1/2 cups | 3 tablespoons plus 1 teaspoon |
10 gallons | 5 cups | 6 tablespoons plus 2 teaspoons |
20 gallons | 10 cups | 3/4 cup plus 1 tablespoon plus 1 teaspoon |
bathtub (aprox 25 to 35 gallons) * | 12 to 17 cups | 1 to 1.5 cups |
* bathtub sizes vary. It is okay to use more water and/or less peroxide.
To spray on sick or fungusy plants:
TO THIS AMOUNT OF WATER | ADD THIS AMOUNT OF 3% HYDROGEN PEROXIDE | --OR-- ADD THIS AMOUNT OF 35% HYDROGEN PEROXIDE |
1 cup | 1 tablespoon | 1/4 teaspoon |
1 pint | 2 tablespoons | 1/2 teaspoon |
1 quart | 1/4 cup | 1 teaspoon |
1 gallon | 1 cup | 1 tablespoon plus 1 teaspoon |
5 gallons | 5 cups | 6 tablespoons plus 2 teaspoons |
10 gallons | 10 cups | 3/4 cup plus 1 tablespoons plus 1 teaspoons |
20 gallons | 20 cups | 1 and 1/2 cups plus 2 tablespoons plus 2 teaspoons |
Please be mindful to choose the correct column in the chart depending on whether you are using 3% hydrogen peroxide or 35% hydrogen peroxide!!
As you may notice, the amount of peroxide in the chart for sick and fungusy plants is twice as much as in the first chart. I have heard of people using stronger solutions, but more is
NOT always better. So be careful, and when in doubt, stay safe. You can always apply more another day. If you decide to use a bit more, please make it only a
bit more, don't get carried away. Gardening with hydrogen peroxide is great, but too much can harm your plants. 10% hydrogen peroxide is recommended as a week killer -- in other words
it will kill your plants at that concentration....