McMaster Counting Chamber

McMaster counting chambers are specialized devices designed for the quantification of parasitic eggs and other elements in suspension, widely used in parasitology and veterinary medicine. Made of high-quality optical glass, they incorporate precisely etched grids that allow for reliable and reproducible counts.

The operating principle is based on creating a defined analysis volume between the chamber base and the coverslip, maintained by risers that establish a constant distance of approximately 1.5 mm. This volumetric control is fundamental to ensure the accuracy of particle quantification.

The range includes two main configurations:

• 2-field version (English): equipped with two counting areas of 10 × 10 mm, subdivided into rectangular sections that facilitate systematic counting. It is an efficient and accessible solution for routine analysis.

• 3-field version (German): incorporates three counting zones, providing greater precision and reproducibility. It has approximate dimensions of 127 × 26 mm and is designed for work requiring higher analytical sensitivity.

Both versions are supplied with their corresponding coverslip, ensuring a proper fit and correct formation of the measurement volume. In the case of the German version, the coverslip can also be purchased as a separate spare part.

The glass construction provides the set with excellent chemical resistance against common reagents, as well as high durability. The polished edges and ergonomic design facilitate the handling and cleaning of the device, optimizing its use in the laboratory.

These chambers constitute a fundamental tool in the analysis of fecal samples and parasitic load studies, providing consistent results in clinical, veterinary, and research settings.