Use for labeling samples stored at room temperature and not exposed to chemicals and/or caustic agents. Teeny Writers are perfect general use lab markers.
Thomas No. 1221R53: The "Original Teeny Writer" has an extra fine tip. Recommended for writing on all our labels for samples that will be stored at room temperature and not exposed to chemicals and/or caustic agents.
Thomas No. 1221R52: The "Twin-Tip Teeny Writer" does double duty. This unique pen has a fine tip at one end and an ultra fine tip at the other end. It will write on virtually any surface.