A square or nested grid divides the viewed field into sampling regions. Cell count, boundary lines and origin define the counting frame.
Specify optical glass or fused silica, overall dimensions, thickness, pattern-side orientation and the clear aperture. Define transmission, reflectance or optical density at the working wavelength when optical contrast is critical.
Cells or particles can be counted in selected squares while the boundary rule prevents double counting. The observed field must be calibrated when the grid sits in the microscope eyepiece.
Calibrate eyepiece divisions against a stage scaleA grid defines area. Liquid concentration additionally requires a known chamber depth and dilution factor; filter-based counting instead relates sampled fields to filter area and collected sample quantity.
Calculate counting volume and concentrationA square or nested grid divides the viewed field into sampling regions. Cell count, boundary lines and origin define the counting frame.
Calibrate the specimen-plane cell area and set inclusion and exclusion rules for particles on boundaries. A planar grid does not define a liquid volume.
A grid divides an area, while point and line arrays support specific sampling estimators. Counting objects per field differs from estimating area fraction or liquid concentration; the sampling method defines the result.
Field coverage, pitch, point spacing, line orientation and labelled sectors can be configured for the counting or sampling method.
A patterned glass reference component with the selected graduations, outline and mounting dimensions, accompanied by the specified inspection records.
Field subdivisions for systematic counting.
Geometric field subdivisions for a defined counting workflow.
Provides a visual sampling grid; an eyepiece grid does not itself set chamber volume.
Repeated field subdivisions for counting routines.
Optical sampling fields for a compatible observation method.
Counting grid reticles divide the microscope field into repeated regions for cells, particles and sampling tasks.
Define cell dimensions, subdivisions and boundary rules together. Area or volume calculations require the matching calibrated field and chamber geometry.
Pitch, subdivisions, field size, counting rules, magnification and any counting chamber.
The grid defines observation regions. Concentration also requires the actual area, sample depth or sampled volume and the chosen method.