Thomas®

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  • Thomas Counter-Pen

    Thomas®

    Easy to read LCD Counts to 99,999 Fail-safe reset Weighs only one ounce Each time a black mark is made with the 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,…

  • Counting Slide

    Thomas®

    Consists of a shallow glass cell, 17.9 mm diameter x 0.4 deep, provided with two charging channels, 2 mm wide x 5 mm long For counting smaller plankters, use 43X dry objectives of approximately 0.65 n.a. and 4 mm e.f. See C.M. Palmer and T.E. Maloney. American Society of Limnology and…

  • Thomas Hand Talley Counter

    Thomas®

    Metal construction for long life Single-hand use Quick manual counting

  • Thomas Digital Key-Chain, Wristband Counter

    Thomas®

    Weighs less than an ounce Easy to read LCD Counts to 99,999 Fail-safe reset Key-Chain/Wrist-Strap/Carabiner Digital Counter is designed for ease-of-use and fail-safe counting. Features include display count to 99,999, two year constant use battery, water-resistant, O-ring-sealed with…

  • Thomas Digital Counter

    Thomas®

    Counts to 99,999 Digital counter fits in your hand or can stand on benchtop. Fail-safe design eliminates accidental resetting. ABS plastic case stands up to lab and plant environments. Features include water resistance, shock resistance and an O-ring seal. Size is 2 2/3” x 1…

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