ColonyDoc-It Imaging Station
Automated Colony Counting
UVP's ColonyDoc-It™ Imaging Station enables researchers to quickly capture and accurately count colonies with the easy to use software interface. Automatically count colonies with the click of a button. Users can easily process time lapse counting, zone sizing and spiral counting. The system illuminates colony plates with multiple excitation sources to visualize white light and fluorescent colonies including GFP colonies. The high resolution digital color camera identifies the smallest colonies. Plate and filter sizes from 33-150mm can be accommodated. Doors create a darkroom environment, eliminating ambient light. Applications include food and beverage control, microbiology, hygiene studies, antibiotic testing, quality control and fluids contamination.
Colony Counting GFP Bacteria
An example of colony counting is demonstrated in UVP's Applications Note FP-142 discusses illumination and counting of GFP expressing E.Coli colonies.
Originally extracted from jelly fish, GFP (Green Fluorescent Protein) is a fluorescent protein that emits a green glow. GFP absorbs the energy of blue light and then emits the partially-consumed energy as green light. GFP is employed as an easily detectable marker. When a bacterial colony is labeled with GFP for comparative study, incubated under protocol conditions and viewed under blue light, the GFP bacteria emits green light. The green light emission allows the researcher to visualize and distinguish the GFP-labeled bacteria, which makes the distinction of GFP labeled cells from unlabeled cells simple and effective. The ColonyDoc-It is configured with an epi blue light (~470nm) excitation source. A GFP filter is added to optimize enumeration of colony growth of bacterial and yeasts labeled with GFP.
The ColonyDoc-It Imaging Station provides a simple instrument for capturing, counting, and reporting GFP-labeled colonies. By providing researchers with built-in epi blue lighting for fluorescence along with an optimized GFP filter, colonies are detectable and counted with ease and accuracy.
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