Cole Parmer Replacement Pen Cartridge For Digital Counter Pen Model

Counter-Pen is a combination marker and digital counter designed for the lab and plant. Use it to count cell growth on petri dishes, inventory parts, and tally samples received. Counter beeps each time a mark is made ensuring an accurate tally. LCD simultaneously displays total and can be reset at the touch of a button. Durable ABS plastic pen features on/off switch and comes with cap. Unit measures 6''L x 2/3'' dia (15.2 x 1.5 cm), weighs only 1 oz.