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A manual colony counter is a benchtop laboratory instrument used in microbiology to help technicians count bacterial, fungal, or microbial colonies grown on agar plates reliably and efficiently. It combines bright transmitted lighting, magnification, and a pressure-sensitive marker pen to tally and mark each colony, with an electronic display showing the current count.
| Transmitted LED Illumination | Provides glare-free, uniform lighting to enhance visibility of colonies on the plate |
|---|---|
| Pressure-sensitive Marker & Counting | Each time the stylus touches a colony, the device records the count and marks the colony to avoid duplicates |
| Real-time Digital Display | Typically shows counts from 0–999 or up to 1998 (depending on the model), making data collection quick and clear |
| Magnification Lens | Built-in or attachable 2×–5× magnifier helps detect tiny or faint colonies |
| Petri Dish Adaptability | Plates of 50–150 mm diameter are supported using various adapters for stable placement |
| Background Contrast Options | Includes black or white backgrounds (darkfield mode) to enhance contrast for translucent colonies |