Countess Automated Cell Counter Resources

Supporting tools and resources for Countess 3 and Countess 3 FL automated cell counters

Explore resources designed to help you get the most from your cell counting workflows—from routine cell culture to advanced single-cell applications. Access how-to videos, application notes, protocols, and insights from fellow researchers using Countess 3 and Countess 3 FL automated cell counters in real-world lab environments.

Whether you’re transitioning from manual hemocytometer counting or optimizing high-throughput cell analysis, you’ll find practical guidance to support fast, reproducible cell counting across a wide range of research applications.

How-to tutorial videos

Methods and technical resources

Countess 3/3FL Brochure

Reusable Slide Green Fact Sheet

User Guide: Countess 3 Automated Cell Counter

User Guide: Countess 3 FL Automated Cell Counter

Quick Reference Guide: Countess 3/3FL Automated Cell Counters

User Guide: Countess SAE Software for 21 CFR Part 11 Compliance Support

User Guide: SAE Admin Console

Specification Sheet: Countess SAE Software for 21 CFR Part 11 Support

Cell Culture Protocols

Documents in this section may include data from Countess II instruments. We expect equivalent data from Countess 3 instruments to be as good or better than Countess II in all cases.

Comparison of Cell Counting vs. Hemocytometers

Improving Cell Counting Accuracy and Precision with Automated, Image-Based Counting

PBMC Counting Using the Countess 3/3FL Automated Cell Counters

Counting of Single Cell and Nuclei on Countess Automated Cell Counters for scRNA-Seq and scATAC-Seq

Fluorescent Cell Viability Assays on Countess Automated Cell Counters

Cell Culture Quality Control During T-Cell Expansion

The Importance of Accurate Cell Counting in Flow Cytometry and Cell Sorting

Fluorescent Apoptosis Evaluation Using the Countess Automated Cell Counter

Fluorescent Protein Reporter Gene Transduction Efficiency Measured with the Countess Automated Cell Counter

Optimizing CRISPR-Cas9 Lentiviral Transduction Efficiency and Antibiotic Selection Treatments

Simple and Accurate Monitoring of Adipogenesis

Software updates

Conveniently download the latest software for Countess 3 automated cell counters, including the 21 CFR Part 11 compliance option.

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Additional resources

Access educational resources on cell imaging, cell counting, and cell culture.

Cell Counting Support Center

Explore FAQs and troubleshooting for solutions to common challenges along with comprehensive support resources.

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Cell Analysis Learning Center

The learning center contains resources for cell analysis techniques and basic principles. Subtopics relevant to Countess 3 products include Cell counting information and the Molecular Probes School of Fluorescence.

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Gibco Cell Culture Basics

Our free introduction to cell culture, covering topics such as laboratory setup, safety, and aseptic technique. You’ll also find basic cell culture techniques and methods for passaging, freezing, and thawing cultured cells.

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For Research Use Only. Not for use in diagnostic procedures.