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Invitrogen™ FocalCheck™ Microspheres, 15 µm, fluorescent green ring stain/dark red throughout

Fluorescent green/orange/dark-red ring stains

Supplier:  Invitrogen™ F7238


Catalog No. F7238

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The sharp ring stains exhibited by the 15μm FocalCheck fluorescent green/orange/dark-red ring stained microspheres produce a striking visual representation of instrument misalignment or other aberrations making them ideal as reference standards for confocal laser-scanning microscopy. Correct image registration is indicated when the multiple ring images are perfectly coincident in all dimensions.

Cell Analysis, Cell Cycle, Cell Viability, Proliferation and Function, Cellular Imaging, Immunofluorescence (IF)



Confocal Microscope Calibration
Suspension Beads
Store in refrigerator 2°C to 8°C and protect from light.
Room Temperature
Dark Red, Green
15 μm
0.5 mL


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