BLAUBRAND®. Double ruling. Without snap-on clips. Cell depth 0.2 mm. The ruling is rectangular, covering an area of 5 mm2. The large rectangles measure 0.25 x 0.20 = 0.05 mm2. They are each subdivided into 20 mini squares with an area of 0.0025 mm2. This chamber is commonly used for counting cells in the cerebrospinal fluid, or for counting nematodes. CE-marked according to IVD-Directive 98/79 EC.