The most popular design today. With a chamber depth of 0.1 mm. The ruling shows 9 large squares of 1 mm² each. The four large 'L' marked squares in the corners to count leucocytes are each subdivided into 16 squares with a side lenght of 0.25 mm. The large square in the center is subdivided into 25 group squares of 0.2 mm side lenght. Each group square consist lenght of 16 mini squares with 0.05 mm side, each having an area of 0.0025 mm². The 5 group squares in the large central square are used for counting thrombocytes and erythrocytes. All group squares have triple boundary lines on each side. The central line is the limiting line and determines whether cells in the marginal area shall be included in the count or not.

• CE-marked according to IVD-Directive 98 / 79 EC.
• Without spring clips.