check my math!

builthatch

builthatch

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ok, all of the dilutions i mix for everything, OPC (at a several strengths), OID, Megs glass, etc got me confused the other day and i ended up making Megs at 4:1 with distilled water. why, i have no real idea because i've made it at 10:1 many many times.

anyway, so i like to premix gallons of it and keep them in milk containers. i made the last gallon at 4:1.

so to correct that to 10:1, i'd basically measure the 4:1 quantity i have (it's not a gallon, it's almost a gallon, hence having to measure), divide that by 5, then take that amount and add that much distilled water to the original 4:1 quantity, right?!!!

i know this sounds ridiculous, but it's so simple i am second guessing myself...

for those who prefer: qty/5=x, then x*4+qty=10:1, right?

thanks!
 
builthatch said:
ok, all of the dilutions i mix for everything, OPC (at a several strengths), OID, Megs glass, etc got me confused the other day and i ended up making Megs at 4:1 with distilled water. why, i have no real idea because i've made it at 10:1 many many times.

anyway, so i like to premix gallons of it and keep them in milk containers. i made the last gallon at 4:1.

so to correct that to 10:1, i'd basically measure the 4:1 quantity i have (it's not a gallon, it's almost a gallon, hence having to measure), divide that by 5, then take that amount and add that much distilled water to the original 4:1 quantity, right?!!!

i know this sounds ridiculous, but it's so simple i am second guessing myself...

for those who prefer: qty/5=x, then x*4+qty=10:1, right?

thanks!
Click to expand...

I don't think you are correct. Let's say you actually have a gallon for ease of conversation.
Dividing by 5 tells you the amount of Megs. To get to 10:1 you have to add that to 10 times that in H2O. Dividing 1 gallon(128 oz) by 5 = 25.6 oz of Megs. Times 10 =256 oz(2 gallons) of H2O mixed with 25.6 oz Megs. Since you already have 128 oz minus 25.6 oz = 102.4 oz of H2O you need to add 256-102.4=153.6 oz of water for a total of 128 oz(1 gal) + 153.6= 281.6 oz of 10:1 solution. Your formula only yielded 230.4 oz of solution.

So if I put this into your format qty/5=x, then x*6+qty=10:1 yielding 281.6 oz of solution

I think this correct
 
thanks! yep! i was in a rush to go food shopping and i was telling my wife i needed to do the math real quick before we leave to figure out how much distilled water we needed to buy to dilute what i had. i posted that and realized it was wrong when i actually went to mix. glad i was only mixing window cleaner and nothing that matters, lol.

i needed to change the 4 in that equation to a 6.

1 gallon of 4:1 will yield 102.4 oz of water and 25.6 oz of megs

graphic represenation:

25.6 + 25.6 + 25.6 + 25.6 + 25.6 is what i had (4:1)

25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 is what i need (10:1)

25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 + 25.6 is what my math would have yielded (8:1)

it became apparent to me when i started. i was doing it by cups. i'd fill the 4:1 solution to the 5 cups line in a 2L container, and then add 6 cups of water, basically topping off the container (5 cups) then adding an add'l cup into my storage jug.

10:1

thanks again ; )
 
You might find this handy (it was actually from Meguiar's Online) - I printed it out for future use.


BlueZero said:
A little explanation... Across the top of the chart is how much product you want to mix up. Along the left is the different dilutions. Where they meet is the amount of product to use. So if you wanted to make a 16 oz bottle of Hyper Dressing at 1:3, you would put 4 oz of Hyper Dressing in the bottle then fill the rest with water. I did round everything, I figure it's pretty hard to measure anything smaller than a 1/10 of an oz.

untitled2.JPG


Here's a link to some of the Detailer Line products with suggested dilutions.
Click to expand...
 
Without explaining the math here to make a 10:1 solution add 1.2 gallons of distilled water to the gallon you have making 2.2 gallons total! I would just get another gallon and split the soultion up half in each gallon and then fill the two containers with water and you will be very close to a 10:1.
 
Aren't you guys are presuming he got the 4:1 dilution correct?

Seriously, 1:1, 4:1, 10:1, how hard can it be?:xyxthumbs:
 
XB70 said:
Aren't you guys are presuming he got the 4:1 dilution correct?

Seriously, 1:1, 4:1, 10:1, how hard can it be?:xyxthumbs:
Click to expand...

lulz, yeah yeah :props:

i did get the initial diltution correct @ 4:1 - i never mess it up when i'm actually doing it, but when quickly transcribing the formula i screwed that up...but again, when i actually went to do it, i automatically corrected things because i was doing it visually. pretty simple that way, akin to the colored text stuff i did in the earlier post. if you had 4:1, and fill it up to a 5 cup line, then you have 6 more cups to go to make it 10:1

: )
 
Dr Oldz said:
Without explaining the math here to make a 10:1 solution add 1.2 gallons of distilled water to the gallon you have making 2.2 gallons total! I would just get another gallon and split the soultion up half in each gallon and then fill the two containers with water and you will be very close to a 10:1.
Click to expand...

Close but no cigar 9:1
 
The following info really helps me out whenever I find myself in your particular situation:

Where e = the proper solution(emulsion)/mixture

e=1+x+x*x/2! + x*x*x/3! + x*x*x*x/4! + x*n!

Where n! = n*(n-1)*(n-2)*.....*3*2*1.

Hope this helps.
:laughing::laughing::laughing: j/k
 
FUNX725 said:
The following info really helps me out whenever I find myself in your particular situation:

Where e= the proper solution(emulsion)/mixture

e=1+x+x*x/2! + x*x*x/3! + x*x*x*x/4! + x*n!

Where n! = n*(n-1)*(n-2)*.....*3*2*1.

Hope this helps.
:laughing::laughing::laughing: j/k
Click to expand...

wait a sec...let me put this on the board...

good-will-hunting.jpg
 
Can you make this where a Eastern KY boy can understand it please??
 
03z71 said:
Can you make this where a Eastern KY boy can understand it please??
Click to expand...

The original post was said that he accidentally made a 4:1 mixed solution when it should've been 10:1 ........... the same as if you milked 4 cows to every one bull - when in all actuality you shoud've milked 10 cows to every one bull. 4:1 concentration leans towards a much stronger situation than should be....... as milking more bulls than normal could dangerously lean towards an abnormal production of sour milk. Trust me.... from Tennessee - aka The South :dblthumb2:
 
B&B Tennessee said:
The original post was said that he accidentally made a 4:1 mixed solution when it should've been 10:1 ........... the same as if you milked 4 cows to every one bull - when in all actuality you shoud've milked 10 cows to every one bull. 4:1 concentration leans towards a much stronger situation than should be....... as milking more bulls than normal could dangerously lean towards an abnormal production of sour milk. Trust me.... from Tennessee - aka The South :dblthumb2:
Click to expand...


Hell only thing running through my mind on your post is a big juicy steak.. Lets get back to liquid here please:dblthumb2:... I don't think we need to milk any bulls either is that a more southern thing???Im the MAN
 
03z71 said:
Hell only thing running through my mind on your post is a big juicy steak.. Lets get back to liquid here please:dblthumb2:... I don't think we need to milk any bulls either is that a more southern thing???Im the MAN
Click to expand...

LOL - sorry man..... couldn't resist!
 
I actually put together an Excel spreadsheet that calculates multiple regressions for concentrations of product in a solution. That's exactly what we are talking about.

I use it to figure out how much new and old coolant or transmission oil I have in my Powerstroke diesel if I just drain and refill one or more times instead of doing a full flush. The spreadsheet will handle all capacities/measurements.

I will e-mail it to the OP for $100. Of course, that doesn't include a tutorial. The tutorial on use will cost $3,500 plus a Costco sized bottle of Tylenol.
 
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