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When i clean i use bleach a lot, and i know that it can be fatal. I did some research and found that the best amount of bleach to use should not excede 3.5 ppm, and that a few breaths of 1000 ppm could cause death.

2007-06-29 16:49:13 · 5 answers · asked by Grace 1 in Science & Mathematics Mathematics

5 answers

This is the fourth posting of essentially the same question, but at least now its making a bit of sense. I think you are asking how much bleach would you mix with water to have a 3.5 ppm and a 1000 ppm concentration.

First of all 1 ppm means a unitless ratio of 1 part per million - a very low concentration.

Let's assume you mean US fluid ounces and there are 128 fluid ounces in a US gallon, and assume your bleach is not diluted

For 3.5 ppm, you would mix 3.5 oz of bleach to every 999,996.5 oz of water (or about 1 oz per 2,200 gallons).

For 1,000 ppm you would need 1,000 oz of bleach for 990,000 oz of water (or about 1 oz per 8 gallons).

This would be a very simple calculation if you chose to use milliliters or liters instead of ounces.

2007-06-29 17:06:11 · answer #1 · answered by minefinder 7 · 0 0

There are no ounces or pounds or whatever. The ppm stands for "parts per million" where the "parts" are whatever you are working with-- gallons, bricks, petals, etc.. The numbers represent a RATIO! A practical example---- If you were working with a gallon of water say--
If you wanted to mix some ammonia into the water at a level of 10ppm. First you must determine what a millionth of a gallon of water amounts to expressed in some unit such as ounce, or pound, or cc (cubic centimeter)-- then you would add 10 of those units of ammonia into the gallon. A U.S. gallon consists of 128 fluid ounces so a millionth of a gallon would consist of 0.000128 ounce. Ten millionths would be 0.00128 ounce. The 3.5ppm would amount to 3x 0.000128 or 0.000384 ounce into one whole gallon of water! Even converted to cc's (cubic centimeters) (which measurement is often used for liquid medicines) the 3.5ppm would only be 0.0114 cc (just over a hundreth of one cc!) Such a very small amount will be very difficult to measure out. I would suggest your call one of the producers of the bleach and ask them how many drops (from an eyedropper) you should add to a gallon of water to achieve the 3.5ppm ratio! I know that backpackers somtimes purify stream water for drinking by putting 2 or 3 drops of Clorox into a gallon of water.Good luck.

2007-06-30 00:52:39 · answer #2 · answered by Anonymous · 1 0

ppm is a ratio so 3.5 ppm would be 3.5millionths of an ounce. Without knowing the amount you start with I cannot say how much a ppm would be.

2007-06-29 23:53:15 · answer #3 · answered by rscanner 6 · 0 0

I use 1 ounce per gallon and I'm not dead yet or suffering from any bacterial problems so I think thats a good ratio.

2007-06-30 00:06:50 · answer #4 · answered by Les S 1 · 0 0

You posted this question 3 times. See the other answers.

2007-06-29 23:52:33 · answer #5 · answered by Anonymous · 2 0

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