CellWriter™ S

The CellWriter™ S robotic workstation produces slides for Karyotyping, FISH and FFPE. Utilizing BioDot’s nanoliter dispensing technology (BioJet) with temperature and humidity control, the CellWriter S simplifies and automates the dropping process to efficiently deliver quality spread interphase and metaphase nuclei for analysis. FISHArray™ enables multiplexed FISH assays and eliminates the need for rubber cement when preparing for hybridization.

  • 1 Dispensing Channel
  • Up to 24 Slide Processing Capacity
  • Up to 24 Sample Processing Capacity
  • Up to 48 Probe / DAPI Vials per Batch
  • Improves Metaphase Spread Quality
  • Real-Time Probe Inventory Management
  • Automated Probe Dispensing
  • Significantly Reduce Probe / Assay Cost
  • Automated DAPI Dispensing
  • Eliminates the Need for Rubber Cement to Hybridize
  • Automated Coverslipping

For Research Use Only. Not for use in diagnostic procedures.


With BioJet printing technology at the core of the CellWriter platform, FISHArray has transformed the traditional FISH assay with respect to cost and quality.  Nanoliter-scale assays enable a true multiplex where up to 8 unique assays can be performed on a single slide.   The FISHArray chip leverages the performance of the CellWriter platform and creates a highly optimized environment for miniaturization. Learn More about FISHArrray.

Cell Concentration Normalization and Environmental Controls

Cell Concentration Normalization and Environmental Controls

Nuclei spreading is a function of cell concentration, slide temperature, and the relative humidity in the airspace next to the slide.  In addition to providing exquisite control over temperature and humidity during the cell deposition process, CellWriter measures the cell concentration of each sample in real-time and adjusts concentration prior to jetting cells to the slidesurface.  The result: unmatched consistency with respect to concentration and spreading.  Each lab determines the right concentration for their assay and adjusts target concentrations based on their needs.

On-Chip Pretreatment

In order to properly condition cells for hybridization, a next generation pretreatment process was designed for FISHArray.  Droplet-based automation and chemistries are automatically applied to hybridization areas while timing, temperature, and volumes are precisely controlled via CellWriter. Reactions are now measured in microliters, not liters.

On-Chip Pretreatment

On-Chip Pretreatment