Water Testing

We have been doing a lot of water quality testen but with te test we have now it's a pain in the ass with all the different liquids. I have been looking for a digital test that can do all in one.

HP test:
http://www.conrad.nl/ce/nl/product/101121/br---VOLTCRAFTbr---PHT-01-ATC-pH-meetstick-brEenpuntsbr0-14-pHbr/1119013&ref=list