A.Sedgewick-Rafter Chamber.
For use in analysis of drinking water. Cement in chamber is insoluble to methyl alcohol. Cover glass (included) supports are inlaid in base. Hermetically seal the chamber with the cover for microorganism growth studies.

B. Neubauer Ruled Chamber.
One-piece construction ensures long term durability and absolute accuracy in measurement and count. Cell depth in the new "V-Load" counting chambers is 0.1mm. Tolerances are ±2% of volume.

C. Petroff-Hausser Bacteria Chamber.
Count bacteria and microorganisms with this high magnification counting chamber. Wide numeric aperture is ideal for dark field microscopy. Cell depth of 0.02mm. Neubauer pattern has 1/400 sq. mm rules.