[quote=”Ekona” post=5299]:) A close examination of the first photo reveals that Lawrence’s finger is not actually touching the water and therefore he did not actually sample it :whistle: . I think this is because he knows that using the sensory method, one must guzzle and swill one liter of the sample solution at least 5 times to get an accurate reading – given the looks of the peat swamp water :S, I cannot say I blame him for the slightly diminished sampling technique :lol:.[/quote]
Exactly, Lawrence, that is it! You could test the method at home by guzzling and swilling your aquarium waters. But don’t touch the water with xour finger afterwards! It will work only with an inch or so distance between finger-tip and water-surface! And of course: You must try ever and ever again. In the end you will be able to dismiss your electronic equipment altogether.