Hamilton pH electrodes offer you more! our electrodes are precision instruments known for their high quality, long lifetime and fabulous performance in a wide range of applications. In order to continue meeting these rigorous requirements, Hamilton constantly strives toward new horizons in electrode technology e.g. the Single Pore concept or the Polisolve electrolyte. PTB (Physikalisch-Technische Bundesanstalt) has stated that the most accurate laboratory electrode is the Single Pore Glass from Hamilton. other advantages of the electrodes are the design, the watering cap as well as the certifi cate which is delivered with the electrodes.