Tinker & Rasor Copper-Copper/Sulfate (CSE) Half Cell Reference Electrode – 2-A “Pencil Cell”

2-A “Pencil Cell”: This small electrode is nicknamed the “Pencil Cell” due to the fact that it holds very similar dimensions to a pen or pencil.  This makes it easy to carry around because it takes up barely any room.  There is also an optional extension handle offered for this electrode.