During my research for basic Baden I came to the soda. It is a panacea for many things and somehow seems to have been forgotten in the course of the (chemical) industrialization. In household, bathroom and kitchen versatile, I've only been astonished what is possible so that all (in Google you will find it quickly). I ordered the 5 kg of soda and in particular for swimming uses (PH value is 150 - 200 g of soda per bath measured with indicator paper beautifully basic) and am very satisfied.