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.

Extended Warranty Packages
Protect your instrument ａnd your investment with Countess II Extended Warranty Packages ａnd save up to 25% off the individual instrument ａnd extended warranty list prices. Learn more >

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).