| Certifications/Compliance | RoHS |
|---|---|
| Detection Method | Brightfield, Fluorescence |
| Dimensions | 9 x 9 x 5.5 in. (228.6 x 228.6 x 139.7 mm) |
| Display | LCD (1280 x 800 pixels) |
| For Use With (Application) | Cell Culture and Analysis Workflows |
| For Use With (Equipment) | EVOS Microscopes, Countess Chamber Slides, and Reusable Slide |
| Frequency | 50/60 Hz |
| Holds | 2 samples per slide |
| Magnification | 2.5X |
| Memory | Onboard, USB drive |
| Optics | 3 Channels (Brightfield and 2 slots for EVOS™ LED light cubes) |
| Quantity | 1 instrument |
| Shipping Condition | Ambient |
| Software | Countess 3/3 FL Cell Counter Software |
| Voltage | 100/240 V |
| Warranty | 1-year Standard |
| Weight (English) | 8 lb. |
| Weight (Metric) | 3.6 kg |
| Camera | 5 MP |
| Product Line | Countess |
| Type | Automated Cell Counter |
| Unit Size | Each |
Answer:The measurement range is 1 × 10^4 to 1 × 10^7 cells/mL, with an optimal range of 1 × 10^5 to 4 × 10^6 cells/mL.
Answer:Yes. It supports brightfield and two optional fluorescence channels and accepts up to two EVOS light cubes selected from fifteen fluorescent channels.
Answer:The instrument works with both disposable and reusable Countess cell-counting chamber slides.
Countess 3 FL Automated Cell Counter is used for rapid brightfield and fluorescence counting of cells and isolated nuclei, fluorescence monitoring, apoptosis assessment, and cell-viability measurement. The benchtop instrument combines advanced optics, automated focus and lighting, and neural-network-based image analysis to reduce the subjectivity and user-to-user variability associated with manual counting. It provides brightfield plus two optional fluorescence channels and accepts up to two EVOS light cubes selected from fifteen fluorescent channels. This flexibility supports routine cell-culture counts as well as live/dead, nucleated/non-nucleated, and transfected/untransfected analyses. A standard workflow mixes 10 µL of sample with 10 µL of trypan blue or another chosen reagent, loads the mixture into a disposable or reusable Countess chamber slide, and inserts the slide. Rapid Capture and Auto-Save automate focus, lighting, counting, and file saving. In about 20 seconds, the instrument reports live and dead cell counts, viability, average cell size, and the percentage of cell aggregates. Its measurement range is 1 × 10^4 to 1 × 10^7 cells/mL, with an optimal range of 1 × 10^5 to 4 × 10^6 cells/mL. For single-cell analysis, RNA sequencing, and gene-expression workflows, it can quantify isolated nuclei and help confirm that the starting sample contains less than 5% aggregates. Results and images transfer through USB, while the touchscreen interface, no-cleaning workflow, and absence of routine maintenance or calibration simplify daily operation.
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