Dilution Ratios

[nyrfan]

What is the correct way to calculation dilution?


For example, if the label calls for 1:10 dilution is it:
1 part "x" and 9 parts “y”
Or
1 part “x” and 10 parts “y”

I tried looking this up on the internet but people seem to be slip on it.

[The Stig]

For a 1:10 it's 1 part X and 9 parts Y

[nyrfan]

Originally Posted by stieger

For a 1:10 it's 1 part X and 9 parts Y

That's what I "thought" but doing some reseach seems that "might be" incorrect. Think about it, what would 1:1 be and how would it differ from 1:2 if we went by the above?

It's driving me nuts!

[The Stig]

Trust me. It's 1 part X and 9 parts Y. I've spent the last year and a half doing research for my thesis. I did a LOT of solutions in that time.

[nyrfan]

Originally Posted by stieger

Trust me. It's 1 part X and 9 parts Y. I've spent the last year and a half doing research for my thesis. I did a LOT of solutions in that time.

That’s good to know.

Just so we are on the same page, let’s assume we needed 128oz diluted 1:4. This would be 32oz of "x" and 96oz of "y" correct?

Here is why I started to get confused. If a product says add 1 part solution to 3 parts water that would be different then 1:3 correct? Because in this case it actually spelling out the ratio. Correct?

Thanks as always!

[camarograna2]

When someone tells u to do 1:10 it means that u need 10 Y for every 1 X. For a total of 11 parts

[nyrfan]

Originally Posted by camarograna2

When someone tells u to do 1:10 it means that u need 10 Y for every 1 X. For a total of 11 parts

And here in lies the confusion!

[camarograna2]

: equals to. It's not complex. One to ten!

[nyrfan]

Originally Posted by camarograna2

: equals to. It's not complex. One to ten!

Well at this point we seem to be 50-50 on this thread.

[Todd@Autopia]

For our chemicals and the products we sell we recommend following the dilution ratios exactly.

For example if something is 10:1, then you would use 10 parts water and 1 part solution, thus yielding 11 parts.

We sell over 60 brands of car care products and this recommendation IME is universal.

For example, Meguiar's Glass Cleaner Concentrate dilutes 10:1. The total yield is 11 gallons according Meguiar's.

BLACKFIRE All Purpose Cleaner dilutes 4:1. The total yield is 5 gallons of APC when diluted.

[The Stig]

Doing 1 part X and 10 parts Y gives you a ratio of 1:11

Here's how you calculate a ratio

(amount of X) / (amount of X + amount of Y)

[nyrfan]

Originally Posted by stieger

Doing 1 part X and 10 parts Y gives you a ratio of 1:11

Here's how you calculate a ratio

(amount of X) / (amount of X + amount of Y)

Take a look at the below link. The dilution rate is 1:10 but it does in fact say it will make 11 gallons. So this then means it is 1 part "x" to 10 parts "y". Had it been 1 part "x' and 9 parts "y" you'd only get 10 gallons.

http://www.autopia-carcare.com/megui...ncentrate.html

I'm glad I'm confused for a reason

[Todd@Autopia]

Originally Posted by stieger

Doing 1 part X and 10 parts Y gives you a ratio of 1:11

Here's how you calculate a ratio

(amount of X) / (amount of X + amount of Y)

From a percentage standpoint yes. But when discussing dilution rations 1:10 means dilute 10 parts of x with 1 part of y.

10:1 doesn't mean 100 percent/10 percent, it means 10 parts + 1 part. In terms of percentages it would be more like 90.91 percent/9.01 percent.

Dilluting something 10:1 gives it a dilution of 90.91:9.01.

[camarograna2]

i love math .lol