Question for those that know about ratios

Christopher

Moderator
I don't know if I am thinking correctly but wanted some opinions.

If you put 1 gallon of chemical "A" into 4 gallons of water then the ratio is 4:1 (water to chemicals).

Now, if you downstream that mix with a downstreamer, say that pulls 10:1 does that make the "A" chemical mix coming out of the gun a 14:1 or something else like 40:1?

What is the ratio of the original chemical "A" now when diluted then downstreamed?


I have not done a test yet, I am thinking of using some food coloring to see the color difference and also try to time it and try to figure out what the final ratio is.

Any ideas?
 

pressurepros

New member
I don't know if I am thinking correctly but wanted some opinions.

If you put 1 gallon of chemical "A" into 4 gallons of water then the ratio is 4:1 (water to chemicals). Chris, this would be the first dilution. The chemical would be one fourth of the mix or 25%.

Now, if you downstream that mix with a downstreamer, say that pulls 10:1 does that make the "A" chemical mix coming out of the gun a 14:1 or something else like 40:1? Now you are taking the above mix and breaking it down again. So you are taking that 25% dilution and dividing it by ten. So now its a 2.5% dilution.

What is the ratio of the original chemical "A" now when diluted then downstreamed?


I have not done a test yet, I am thinking of using some food coloring to see the color difference and also try to time it and try to figure out what the final ratio is.

Any ideas?

When diluting two separate times, you multiply the two ratios together.
4:1 mixed down again to 10:1 = 40:1

Expressed as a fraction:
1/4 x 1/10 = 1/40 OR 40:1

I posted this everywhere you asked because I want to make sure I have been doing it right.
 

Jonathan Ellis

moderator
When diluting two separate times, you multiply the two ratios together.
4:1 mixed down again to 10:1 = 40:1

Expressed as a fraction:
1/4 x 1/10 = 1/40 OR 40:1

I posted this everywhere you asked because I want to make sure I have been doing it right.

at one gallon chemical and four gallons water the chem ratio would be 20% right? You would have one gallon of chemical total in 5 gallons total of liquid.

Am I missing something?

Good post nonetheless
 

Scott Stone

New member
at one gallon chemical and four gallons water the chem ratio would be 20% right? You would have one gallon of chemical total in 5 gallons total of liquid.

Am I missing something?

Good post nonetheless
Nope, you are not missing anything, at least when it comes to this...
 

810f250

Griffs Services PowerWash
Originally Posted by Christopher
I don't know if I am thinking correctly but wanted some opinions.

If you put 1 gallon of chemical "A" into 4 gallons of water then the ratio is 4:1 (water to chemicals). Chris, this would be the first dilution. The chemical would be one fourth of the mix or 25%.



Now, if you downstream that mix with a downstreamer, say that pulls 10:1 does that make the "A" chemical mix coming out of the gun a 14:1 or something else like 40:1? Now you are taking the above mix and breaking it down again. So you are taking that 25% dilution and dividing it by ten. So now its a 2.5% dilution.

What is the ratio of the original chemical "A" now when diluted then downstreamed?


I have not done a test yet, I am thinking of using some food coloring to see the color difference and also try to time it and try to figure out what the final ratio is.

Any ideas?

A great deal of confusion sets in with respect ratio and percentages, you have to be careful of the words used in deriving ratios and percentages and understand what is requested to be determined.


I am confused most of the time too.


The chemical ratio of what Chris described would be 4:1 water to chemical.

Ken when you say..... "The chemical would be one fourth of the mix or 25%" ,.......the one fourth part is correct for the pure ratio 4:1.

But 25% it is not to be used in the mathematical working to calculate the strength "of the mix"


Using the words 25% and "of the mix" in one sentence could be tricky and may confuse some because most may visualize or think "of the mix" as being 4 gallons of water and 1 gallon of chemical, thus "the mix" is now 5 gallons .


Now lets use the one fourth you mentioned (25%) with the 5 gallon "mix" I mentioned above.......25% of 5 gallons is 5/4 gallon or one and a quarter gallon (chemical) which would be a incorrect amount of chemical in five gallons "of mix" which should have yielded a ratio of 4:1


A ratio of 4:1 water to chemical in a full 5 gallon bucket would have 1 gallon of chemical and 4 gallons of water, i.e. chemical is one fifth "of the mix"


One gallon of new solution or "mix" would be one fifth the strength of one gallon of the original chemical i.e. 20% ....but the ratio of chem to water is 1:4 or written another way chem/water is (1/4) is 25%
 
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