convenient device for determining the status of water in our 'paddling pool. You fill the chambers with water are the two test tablets to shake, pH and chlorine content can be read by a separate color scale. This corresponds to the professional methods in the swimming pool. You have then "seasoning" with pH-lowering agents and chlorine, the water in the pool, then ists well.
Unfortunately, the manual is very poor, to the effects of incorrectly set water there is no word, where you ordered the test tablets remains the secret of the (Austrian?) Manufacturer.