Front right angled view of Countess II instrument
Front right angled view of Countess II FL instrument with 2 EVOS light cubes at the left side

Find technical resources for the Invitrogen Countess II, including manuals, application notes, software download information, and ordering information for consumables and accessories for your instrument.

Discover the accuracy from the machine-learning algorithm of the Countess 3 Automated Cell Counter.

Countess 3 Automated Cell Counter brochure


Accessory products for Countess II Automated Cell Counter

Software updates


Video: How to update the software

When the Countess II and Countess II FL Automated Cell Counters require a software update, the process is simple. Just watch this quick video for the easy steps to update.

Video: Automated Cell Counter—reusable slide, two optional fluorescent channels

The Invitrogen Countess II FL Automated Cell Counter offers brightfield counting and two optional, user-changeable fluorescence channels.

Video: Performing a simple brightfield count on the Countess II FL Automated Cell Counter

Count cells, measure cell viability, and monitor fluorescent protein expression—in just 10 seconds with no slides or tips to buy.

Video: Using the reusable hemocytometer on the Countess II FL Automated Cell Counter

Video: Changing the EVOS Light Cubes on the Countess II FL Automated Cell Counter

Countess II Automated Cell Counter

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Countess II FL Automated Cell Counter

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