【Convenient to use】activate the swap,put the probe in to the water and stir (make the little glass ball fully contact the liquid) and the worth could be read when the worth is steady. In systems that are needed to get rid of ammonia nitrogen, alkalinity is often a important checking https://waylontbjpx.bloggactivo.com/18269880/a-secret-weapon-for-best-alkaline-water-machine