Help, again!

[lawrence at lmli.freeserve.co.uk (nospam)]

Oh...the dilemma!!!
I know I said I was going to do pH and Germination but I figure there is not
really much depth in that topic...and someone suggested a study of plant
hormones.
One thing though, how do I make up the solutions?  I realised the
concentration in Textbooks are measured in ppm (parts per million), how can
I do that with school equipments?  Would I be able to use mung beans and
cotton wool?
Lawrence