CASY enables extensive Cell Status Monitoring. Label-free with outstanding precision and reproducibility.

Thousands of users trust CASY

For several years now, CASY has been a trustworthy workhorse in cell-culture laboratories. CASY is referenced in over 2,000 publications, and users will see it in a myriad of publications and PhD theses and on laboratory benches throughout the world.


Image Credit: CYTENA GmbH

How does it work?

CASY measures cells and particles by passing a measuring pore vulnerable to a low-voltage electrical field. Depending on the size and conductivity of the cell, a resistance signal has been produced and recorded.

Living cells tend to produce high resistance signals as a result of their intact membrane structure. Dying or dead cells result in much lower resistance by virtue of increased membrane permeability and are quantified by the size of their cell nuclei.


Image Credit: CYTENA GmbH

Advantages designed for users’ success

Users can get a look into why the CASY cell counter guarantees excellent performance.


Image Credit: CYTENA GmbH

Label-free cell status. Instantly

Just within a matter of seconds, measurement has been executed in a non-invasive manner in the absence of using distorting dyes.

Statistically relevant data

Analysis of over 4,000 cells per run guarantees statistically considerable outcomes.

Get the full picture

CASY measures all appropriate parameters of cells, such as cell size, cell viability, and aggregation—at extremely low running charges.

Certified lifetime calibration

Ensured the utmost ±2% variation by making a comparison of measurements and instruments.

Integrate QA system

Automatic electronic monitoring of all appropriate parameters of the system.

GLP/GMP compliance

Users can link to the tablet directly to their computer to drag-and-drop their models in just seconds.


Mammalian cell counting

Prior to beginning long-term experiments with high-value mammalian cells, it is significant to count cells in an accurate manner. The CASY offers extensive insights into cell viability, health, and aggregation in one simple measurement.


Image Credit: CYTENA GmbH

Bacterial cell counting

CASY’s 45 μm capillary is perfectly suited to track bacterial proliferation and aggregation. Scientists have the potential to plot changes in cell volume and number and track biovolume with a user-friendly, dye-free tool.


Image Credit: CYTENA GmbH

T-cell monitoring

CASY could be utilized to track T-cell cultures for immunotherapeutic methods by identifying cell size and cell proliferation at the time of T-cell stimulation.


Image Credit: CYTENA GmbH

Featured workflow

The wide product portfolio provides a range of original technologies and instruments for considerably increasing the speed, quality, and efficiency of cell line development workflows. For instance, The CASY cell counter smoothens their sample preparation with quick and user-friendly cell counting and analyzing.


Image Credit: CYTENA GmbH

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