Batteries for pH/TDS pen, 1.4v, pack of 4
Stock up on batteries for your pH/TDS pen and never be without. The tiny battery discs hardly take up any room-- you can even store them right in your pen case so you're always prepared.
Stock up on batteries for your pH/TDS pen and never be without. The tiny battery discs hardly take up any room-- you can even store them right in your pen case so you're always prepared.