[alt-photo] Re: Dilution calculation

[Jeremy Moore]

A 20% solution mixing 1:1 with water will give you a 10% solution. Mixing
your 20% solution 1:3 gives you a 5% solution. Mixing the 20% 1:7 with
water gives 2.5%..

I suggest mixing 1:3 to make a 5% solution then taking a portion of this
and diluting 1:1 to make your 2.5% solution.


On Fri, Mar 2, 2012 at 1:52 AM, Jon Reid <jon at sharperstill.com> wrote:

> Dear list,
> Would someone be kind enough to either explain how to work out
> dilution calculations or how to use one of the online calculators?
>
> Several online dilution calculators have units and symbols I don't
> understand.
>
> I have 20% Na2 and I'd like to create some 2.5% and 5% solutions.
>
> Further, what's a good method for accurately measuring small amounts
> of solution? Do I need a pipette?
>
> Jon
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