Counting chamber, with CE marking acc. to IVD directive, double ruling, without clamps. With 2 optically plane cover glasses in a transparent plastic box.
The central square of 1 mm2 contains 25 groups of squares divided into 16 mini squares of 0.05 x 0.05 mm each. Triple marginal lines at all sides of the square groups distinguish this ruling from Neubauer improved. The middle line is decisive for the counting.
