[alt-photo] Re: Dilution calculation

[Philippe Ayral]

Here is how I do myself:
I prepare small bottles for 10%, 5% and 2,5% solutions
I take 5 ml from 20%, put it in the 10% bottle ; I add 5 ml of distilled water
After that I take 5 ml form 10% put it in the 5% bottle I add 5 ml of
distilled water
idem for 2,5% solution.


2012/3/2 Jon Reid <jon at sharperstill.com>:
> 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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> Alt-photo-process-list | http://altphotolist.org/listinfo



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Philippe Ayral
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Tél. 04 50 39 79 81
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