Applied Biosystems™

Countess™ II FL Automated Cell Counter Extended Warranty Package

Catalog number:  A27974

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The Countess II FL Automated Cell Counter is a benchtop assay platform equipped with state-of-the-art optics, full autofocus, and image analysis software for rapid assessment of cells in suspension. With three-channel flexibility—brightfield and two optional fluorescence channels—researchers can count cells, monitor fluorescent protein expression, evaluate apoptosis, and measure cell viability.

Accurate—eliminate the subjectivity of manual cell counting and user-to-user variability
Flexible—accepts up to two EVOS light cubes that are user-selectable from over twenty fluorescence channels
Fast—provides a total cell count, reports viability, and measures average cell size in as little as 10 seconds
Convenient—requires no cleaning or routine maintenance. A capacitive touchscreen and simple user interface provides quick startup and requires minimal training.

Learn more about our automated cell counters ›

The Countess II FL Automated Cell Counter Extended Warranty Package comes with:
• 3 years AB Repair Center (ABRC) Plus extended warranty
• Countess USB drive for storing and transferring data to your computer
• Disposable slide holder
• Reusable slide holder
• Light cube removal tool
• Power cord and four plug adaptors to accommodate most countries
• Quick reference card (QRC)
• A free box of 50 disposable slides

The Countess II FL Automated Cell Counter works in three simple steps:
1. Mix 10 µL of sample with 10 µL of trypan blue and pipet into a disposable Countess chamber slide.
2. Insert the slide into the instrument.
3. Press the "Count" button.

Get accurate cell counts
The Countess II FL Automated Cell Counter uses trypan blue staining combined with an auto-focus mechanism and sophisticated image analysis algorithm to obtain accurate cell and viability counts. The measurement range extends from 1 x 10e4 to 1 x 10e7 cells/mL (the optimal range is 1 x 10e5 to 4 x 10e6 cells/mL), which is broader than that of a hemocytometer. The optimal cell size for accurate viability assessment is 7–60 µm, while particles as small as 4 µm can be successfully counted.

Simple operation with fluorescent application versatility
Operated using an intuitive user interface, automated cell counting with the Countess II FL instrument gives you the data you need to prepare your sample for the next passage or experiment, and allows you to multiplex with a variety of fluorescent dyes and proteins excited via EVOS light cubes.

Transfer data and images to your PC
Using the USB port on the Countess II FL Automated Cell Counter, you can save your cell count results and images, and then transfer them to your PC. (For your convenience, a USB drive is supplied with the Countess II FL instrument).

Countess II/II FL Software ›

AB Repair Center (ABRC) Plus Extended Warranty
Add additional years of warranty coverage to your existing manufacturer’s limited warranty with the AB Repair Center (ABRC) Plus extended warranty. With ABRC Plus support, we provide a loaner instrument for you to use while factory-trained engineers maintain and repair your instrument at our remote service center. Just mail us your instrument and we’ll repair and ship it back to you within three weeks. All parts, labor, and shipping charges are included.

The ABRC Plus extended warranty is ideal for customers in regulated environments that must maintain asset tag consistency to comply with regulated protocols.

Certain exclusions apply. Contact your Service and Support Representative for details at

Package components

Unit size


Countess™ II FL Automated Cell Counter Catalog number:AMQAF1000 1 instrument 1
Countess® II FL Automated Cell Counter, 3 years extended warranty, ABRC Support Plus Catalog number:ZG04SCCOUNTESS2FL3 3 yr ext warranty, ABRC Support Plus 1
For Research Use Only. Not for use in diagnostic procedures.


Cell Size: 4-60 µm (detection), 7-60 µm (viability)
Concentration: 1x104-1x107 cells⁄mL
Instrument Memory: USB Stick
Capacity: One 2-chamber disposable or 2-chamber reusable slide
Detection Method: Brightfield & 2 user-definable FL channels
Dimensions: 9 in (228.6 mm) W x 5.5 in (139.7 mm) D x 9 in (228.6 mm) W
Display Interface: 7" Capacitive touch screen
Input Voltage: 100-240 VAC
Plan Duration: 3 Year ABRC Extended Warranty
Product Line: Countess™
Product Size: Instrument + 3 yr ABRC Plus ext warranty
Shipping Condition: Room Temperature
Warranty Response Time: Your instrument repaired and returned within 3 weeks of receipt
Warranty Services Included: Loaner instrument during repair, Parts labor and shipping, Priority access to Applications and Instrument Technical Support teams, Priority access to off-site Remote Service Engineer
Warranty Services Not Included: Planned maintenance, User-replaceable parts
Weight: 8 lbs


Manuals & protocols