anyone good at maths ? Dilution ratio cost against ready made products

ShiWarrior · 17 Jun 2021 at 19:45

Hi

I can not work this out at all !!
need help please

I'm looking at buying some Car Pro Hydro 2 for my car,

Costs and dilution ratio are as follows :

Ready to use product would cost me a 1 litre bottle @£22 delivered

or

(concentrated) Not ready mixed bottle of 100ml would cost me @ £18 delivered

if I dilute the concentrated product down 6 parts product, 1 part water into a spay bottle
(example 1L)
(6:1 is 14.3ml of product , 85.7ml of water)

how much money would I be saving (or not if that's the case) against a ready to use bottle ?

dowie · 17 Jun 2021 at 19:53

A litre contains 1000ml not 100ml, you don’t have enough for a litre if you need to dilute it with 6 parts water, you’d only have 700ml for £18.

So if you need a litre you need to buy more but you’re able to buy a litre already prepared for less!

ShiWarrior · 17 Jun 2021 at 19:55

but i do not know how much the 100ml concentrate would cost me to get the same as ready made product where it be 100ml or 1000 ml etc

UnworthyBean · 17 Jun 2021 at 19:56

It's cheaper to buy the premade if those figures and my maths are correct.

Premade is £18 per litre

Dilutey stuff works out about £25 a litre.

....I think?

Edit - to get a more accurate price then you'll need to quote figures without delivery

Zefan · 17 Jun 2021 at 19:59

I'm assuming it's 6 parts water, 1 part product, not the other way around as per your OP.

Concentrate = 700ml of mixed solution for £18 (100ml concentrate, 600ml water)
£18/700 = £0.025, meaning a cost of 2.5p per ml

Pre-mixed = £22 for 1000ml
£22/1000 = £0.022, meaning a cost of 2.2p per ml

The pre-mixed is 85% the cost of the concentrate.

ShiWarrior · 17 Jun 2021 at 19:59

UnworthyBean said:
It's cheaper to buy the premade if those figures and my maths are correct.

Premade is £18 per litre

Dilutey stuff works out about £25 a litre.

....I think?

if you are correct, be jesus !
i thought it be the other way around !!

Angilion · 17 Jun 2021 at 20:00

Those numbers seem a bit odd to me...

If you were diluting 6 parts water to 1 part concentrate (you state the reverse, but that's unlikely and the numbers you give are for more water than concentrate) then the 100ml of concentrate would make 700ml of ready to use product - 600ml of water and 100ml of concentrate. £18 for 700ml is £25.71 per litre, so the ready mixed would be cheaper.

ShiWarrior · 17 Jun 2021 at 20:01

Zefan said:
I'm assuming it's 6 parts water, 1 part product, not the other way around as per your OP.

Concentrate = 700ml of mixed solution for £18 (100ml concentrate, 600ml water)
£18/700 = £0.025, meaning a cost of 2.5p per ml

Pre-mixed = £22 for 1000ml
£22/1000 = £0.022, meaning a cost of 2.2p per ml

The pre-mixed is 85% the cost of the concentrate.

wow !

give that man a haribo !

ShiWarrior · 17 Jun 2021 at 20:02

thanks guys

Angilion · 17 Jun 2021 at 20:02

Now I'm curious as to why the ready mixed is cheaper. It's usually the other way around. Different suppliers? Special offer?

dowie · 17 Jun 2021 at 20:06

Angilion said:
Now I'm curious as to why the ready mixed is cheaper. It's usually the other way around. Different suppliers? Special offer?

Quite possibly confusion on the part of the OP.

ShiWarrior · 17 Jun 2021 at 20:06

Angilion said:
Now I'm curious as to why the ready mixed is cheaper. It's usually the other way around. Different suppliers? Special offer?

its very hard to get it in the UK, so not many places sell them
wanted to be sure buying the concentrated version was indeed cheaper, but alas its NOT !

UnworthyBean · 17 Jun 2021 at 20:07

Just had a quick Google and it doesn't look like theyre exactly the same product although it's hard to tell?

The premix stuff looks likes it's diluted more hence the more expensive price.

Zefan · 17 Jun 2021 at 20:07

Angilion said:
Now I'm curious as to why the ready mixed is cheaper. It's usually the other way around. Different suppliers? Special offer?

Not necessarily confusion, surely this sort of solution can't be expensive to make, so it might not be a linear scaling with the amount of product.

Ultimately, they're making 22% more (before whatever their costs are) with the pre-mixed, it could be as simple as that.

BallistixOnZ490 · 17 Jun 2021 at 20:08

Angilion said:
Now I'm curious as to why the ready mixed is cheaper. It's usually the other way around. Different suppliers? Special offer?

Have you ever looked at the prices between UHT milk and milk powder?

UHT is the cheapest option in the UK, even though technically powder should be cheaper as it is the most concentrated.

ShiWarrior · 17 Jun 2021 at 20:09

its called Car Pro Hydro 2 (concentrate)
Car pro Hydro 2 LITE (ready made)

slims Detailing sell the pre made for £17 + £5 delivery

UnworthyBean · 17 Jun 2021 at 20:16

Yep, the lite is diluted a bit more so they're about similar price wise. Avoids the hassle but doesn't let you control the strength.

Angilion · 17 Jun 2021 at 20:20

BallistixOnZ490 said:
Have you ever looked at the prices between UHT milk and milk powder?

UHT is the cheapest option in the UK, even though technically powder should be cheaper as it is the most concentrated.

I think making milk powder from milk is more expensive than making UHT milk from milk. But maybe not. Maybe it's just a matter of what customers will pay for what is generally perceived as being two different products.