Digital Counter Pen

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Digital Counter Pen
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  • Thomas Counter-Pen

    Thomas®

    …felt-tipped pen, it automatically sounds a beep, and LCD displays the counts. Use it to count cell growth on petri dishes, inventory parts, and tally samples received. Touch, sound, and count occur simultaneously. Impossible to make an error, even when interrupted. Marks hold your place and counter

  • Scienceware® Colony Counter

    Bel-Art Products

    …red and black felt-tip markers (included) work on plastic or glass and are oil and water resistant; ink is removable with ethyl alcohol Includes 3V lithium battery and protective storage case NOTE: Complete Colony Counter System is also available. See the May We Suggest section below.

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