Search Thermo Fisher Scientific
- Contact Us
- Quick Order
-
Don't have an account ? Create Account
Search Thermo Fisher Scientific
Both Countess models are fast, simple, automated cell counters that incorporate artificial intelligence for superb accuracy and precision, even for challenging samples. Choose between the Countess 3 Automated Cell Counter with brightfield cell counting and the Countess 3 FL Automated Cell Counter with both brightfield and fluorescence modes.
![]() Countess 3 FL Automated Cell Counter |
![]() Countess 3 Automated Cell Counter |
Product summary |
|
---|---|
Highly accurate, easy-to-use, brightfield and fluorescence cell counter with reusable slide capability and interchangeable light cubes | Highly accurate, easy-to-use, brightfield cell counter with reusable slide capability |
Example usage | |
Cell biology labs that need accurate, simple, quick, and affordable brightfield and fluorescence cell counts, extending to in-depth analysis of mixed cell populations such as live vs dead, nucleated vs non-nucleated, and transfected vs untransfected | Cell culture labs that need accurate, simple, quick, and affordable brightfield cell counts to prepare cells for downstream applications and culture splitting |
While the Countess II/II FL models are no longer available, the Countess 3/3 FL boasts a myriad of enhanced features designed to help streamline cell counting processes with exceptional accuracy and precision. Explore the detailed comparison between Countess II/II FL and Countess 3/3 FL Automated cell counters below.
Feature | Countess 3/3 FL Automated Cell Counter | Countess II/II FL Automated Cell Counter |
Wi-Fi cloud connectivity | Yes | N/A |
Brightfield "Rapid capture" |
Yes | N/A |
Autosave |
Yes | N/A |
Saturated pixel indication | Yes | N/A |
Single-cell data |
Yes | N/A |
FCS file |
Yes | N/A |
21 CFR Part 11 software support | Yes | N/A |
Local Area Network (LAN) saving | Yes | N/A |
Scatter plot visualization |
Yes | N/A |
Self-service OQ | Yes | N/A |
Algorithm | Advanced algorithms, auto-focus and auto-detection developed with deep learning artificial intelligence algorithms | Simple watershed algorithm |
Display | 1280 x 800 high-resolution, flush touchscreen |
800 x 600 pixel, beveled touchscreen |
Fluorescence autolighting | Yes - Countess 3 FL model | No - Countess II model required manual adjustment |
Reusable slides | Yes - both Countess 3 and 3 FL models | No - Countess II model; Yes - Countess II FL model |
Calculators | pre/post-dilution and cell splitting | cell splitting |
Other information | Second-generation slide holder - improved field of view (FOV) & cell count consistency | First-generation slide holder |
Both Countess 3 models work the same way and share common features:
Both models accurately count “difficult” samples such as those containing clumpy cells or debris, and both reduce variability between users, helping increase reproducibility.
The key difference between the models is that the Countess 3 instrument counts in brightfield mode only, while the Countess 3 FL instrument can count in either brightfield only or brightfield and fluorescence mode using interchangeable EVOS LED light cubes. Fluorescence capabilities open up additional application options for the Countess 3 FL instrument, and can extend your research beyond just GFP and RFP with 14 EVOS LED light cubes to choose from.
Looking for information about Countess II Automated Cell Counters? See Countess II resources.
For research use only. Not for use in diagnostic procedures.