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Countess™ USB Drive

For use with Countess® II & Countess® II FL automated cell counters, as well as other USB-enabled devices.

Tali™ Image-Based Cytometer Power Cord (Invitrogen™)

This power cord is a replacement part for the Tali® Image-Based Cytometer instrument. The Tali® Image-Based Cytometer Power cord and the four universal adaptors included have been specifically designed for use with the Tali® Image-Based Cytometer instrument. This product has been CE certified.

Countess™ II FL Automated Cell Counter

The new 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—use the Countess II FL Automated Cell Counter to eliminate the subjectivity of manual cell counting and user-to-user variability
Flexible—the Countess II FL Automated Cell Counter is able to accept up to two EVOS light cubes that are user-selectable from over twenty fluorescence channels
Fast—the Countess II FL Automated Cell Counter provides a total cell count, reports viability, and measures average cell size in as little as 10 seconds. Counting speed is identical when using fluorescence channels.
Convenient—the Countess II FL Automated Cell Counter 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 comes with:
• Countess USB drive for storing and transferring data to your computer
• Disposable slide holder
• Reusable slide holder
• Light cube removal tool
• Power cord and 4 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 3 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 >


Countess™ II FL Reusable Slide Holder

For use with Countess® II FL Automated Cell Counter Only. Holds the Countess® II FL Reusable Slide (A25750). Not compatible with Countess® disposable slides.

Tali™ Cellular Analysis Slides (Invitrogen™)

The Tali® Cellular Analysis Slides are specifically designed for use with the Tali® Image-Based Cytometer. Each slide contains two separate, enclosed analysis chambers designed to accommodate 25 µl of sample per chamber. Each box contains 50 slides.

Ready to Use for Your Convenience
Each Tali® Cellular Analysis slide is pre-sterilized and individually packaged. Since the Tali® Image-Based Cytometer is a fluorescent cellular analysis instrument the slides are composed of low fluorescent plastic. The slides are disposable; after use the slides can be disposed of with you regular biohazard waste.

For Research Use Only. Not intended for any animal or human therapeutic or diagnostic use.

Learn more about the the Tali® Image-based Cytometer

Countess™ Test Beads (Invitrogen™)

Countess® Test Beads are designed to help users verify that their Countess® Automated Cell Counter is counting and sizing cells within the expected ranges. Countess® Test Beads are latex beads with a nominal diameter of 10 µm ±10% and are supplied as a suspension containing 1 × 106 beads/mL ±10%.

Learn more about the Countess® Automated Cell Counter.

Countess™ Cell Counting Chamber Slides (Invitrogen™)

Countess® Cell Counting Chamber Slides are designed for use with the Countess® Automated Cell Counter. This set includes 100 boxes of slides (50 slides per box) and 2 × 100 mL bottles of trypan blue (0.4%).

Ready to Use For Your Convenience
Countess® Cell Counting Chamber Slides are individually packaged for your convenience. Each slide has two separate, enclosed chambers that can be used to count one sample in duplicate or to count two different samples. Cell counting occurs in a central location of the counting chamber. The volume counted is 0.4 µL, the same as counting four 1-mm2 squares in a standard hemocytometer. After use, Countess® slides can be disposed of with your regular biohazard waste. Unlike a hemocytometer, there is no need to clean Countess® slides before or after use.

The Countess® Automated Cell Counter works in 3 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 cells" button.

That’s it—get the total cell count, percent viable cells, and average cell size in as little as 30 seconds.

Learn more about the Countess® Automated Cell Counter.

Read the Frequently Asked Questions (FAQs) for the Countess® Automated Cell Counter.

Malassez Hemocytometer

These products are advised for use with Dynal® T4 Quant:

Acridine Orange Staining Solution—for use with fluorescent microscopy

Sternheimer-Malbin Staining Solution—for use with light microscopy

Turck Staining Solution—for use with light microscopy

Washing/dilution Buffer—20X concentrated phosphate buffered saline (PBS) with 2% bovine serum albumin and 2% sodium azide

Countess™ II Automated Cell Counter

The new Countess™ II 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.

Accurate—use the Countess II Automated Cell Counter to eliminate the subjectivity of manual cell counting and user-to-user variability
Fast—the Countess II Automated Cell Counter provides a total cell count, reports viability, and measures average cell size in as little as 10 seconds
Convenient—the Countess II Automated Cell Counter 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 Automated Cell Counter comes with:
• Countess USB drive for storing and transferring data to your computer
• Disposable slide holder
• Power cord and 4 plug adaptors to accommodate most countries
• Quick reference card (QRC)
• A free box of 50 disposable slides

The Countess II Automated Cell Counter works in 3 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 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.

Transfer data and images to your PC
Using the USB port on the Countess II 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 instrument).

Countess II/II FL Software >


Countess™ II FL Light Cube Removal Tool

For use with Countess II FL Automated Cell Counter Only. Used for installation or removal of EVOS Light Cubes from the Countess II FL instrument.

Countess™ II FL Reusable Slide

For use with the Countess® II FL Automated Cell Counter Only. The Countess II FL Reusable Slide is a greener alternative to disposable slides.

Countess™ Power Cord with Plug Adapters (Invitrogen™)

This is a replacement or additional power cord for use with the Countess® Automated Cell Counter. Included is 1 power cord and 4 plug adapters that allow the cord to be used in most countries.

Learn more about the Countess® Automated Cell Counter.

Countess™ II FL Disposable Slide Holder

For use with Countess® II FL Automated Cell Counter Only. Holds Countess® disposable slides. Not compatible with the Countess® II FL Reusable Slide (A25750).

Countess™ II FL Automated Cell Counter Starter Package (Invitrogen™)

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, and measure cell viability. This Countess II FL Starter Package contains the Countess II FL Automated Cell Counter, two of the most popular EVOS light cubes (GFP and RFP), disposable and reusable slides to maximize convenience and minimize cost, as well as trypan blue stain.

• Accurate—eliminates 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—counts live and dead cells and measures average cell size in as little as 10 seconds. Counting speed is virtually identical when using fluorescence.
• Convenient—requires no cleaning or routine maintenance. A capacitive touchscreen and simple user interface provides quick startup and requires minimal training.

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 × 104 to 1 × 107 cells/mL (the optimal range is 1 × 105 to 4 × 106 cells/mL), which is broader than that of a hemocytometer. The optimal cell size is 10–60 µm.

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 and any USB drive, you can save your cell count results and images and transfer them to your PC. (For your convenience, a USB drive is supplied with the Countess II FL instrument.)