Thermo Fisher Scientific Countess 3 Cell Counter

The Thermo Fisher Scientific Countess 3 Automated Cell Counter is a compact digital cell counting system designed for fast, accurate analysis of cells in cell biology, biotechnology, pharmaceutical, and research laboratories. The Countess 3 automates routine cell counting workflows, helping reduce the time and variability associated with manual hemocytometer counting.

With a processing time of less than 30 seconds per sample, the Countess 3 cell counter can analyze samples ranging from 1 × 10⁴ to 1 × 10⁷ cells/mL and particles approximately 4–60 µm in diameter. Only 10 µL of sample is required per analysis, making it well suited for workflows where sample volume is limited.

The system features a 5-megapixel camera with 2.5X optical magnification for digital imaging and cell analysis. This unit is in great condition and is suitable for routine cell culture, cell concentration measurements, and general cell biology workflows.

Key Features

• Automated cell counter
• Digital cell counting and analysis
• Results in less than 30 seconds
• Requires only 10 µL of sample
• Cell concentration range of 1 × 10⁴–1 × 10⁷ cells/mL
• Detects cells/particles approximately 4–60 µm
• 5 MP digital camera
• 2.5X optical magnification
• Compact benchtop design
• Suitable for cell culture and cell biology workflows

Technical Specifications

Manufacturer: Thermo Fisher Scientific
Model: Countess 3
Product Type: Automated Cell Counter / Digital Cell Counter
Processing Time: <30 seconds per sample
Concentration Range: 1 × 10⁴–1 × 10⁷ cells/mL
Cell/Particle Diameter Range: ~4–60 µm
Sample Volume: 10 µL
Camera: 5 megapixels
Optical Magnification: 2.5X
Counting Area: 2.26 × 1.69 mm (3.82 mm²)
USB Compatibility: 32 GB; FAT32, exFAT, or NTFS