DO NOT store your pH electrode in distilled or deionised water as this will cause ions to leach out of the glass membrane and reference electrolyte, causing a slow and sluggish response.

It is a solution prepared with reagent grade chemicals that that can be used to ensure optimum performance of  Electrode.The life  electrode is not infinite. A number of factors affect the life span of your  electrode. The higher the temperature that the electrode is used at, the more extreme , how often the bulb dries out and needs to be rehydrated, how roughly it is used; all these factors and more shorten the life span of your electrode. An   electrode
that is well maintained and cared for can last up to 2 years, one that is not well maintained will not last as long, and one that is well maintained will not last significantly longe.Electrode Storage Solution helps to keep your  electrodes corrosion free between uses. These solutions are easy-to-use.

This is special formulation to minimize microbial growth and osmotic / diffusion effect between the solution and inner reference electrolyte. Manufactured specifically for pH , ORP and other testing elctrodes.