Confezione da 15 Soluzioni Tampone Misuratore di pH in Polvere per Calibrazione PH Precisa e Facile,
Wide range of applications: testing the pH balance of drinking water, aquariums, swimming pools, spas or hydroponics. Step 2: Add 250 ml of deionized water (or distilled water) to the container. gently, and wait a few seconds.