刻蚀线血细胞计数板(The Dark-Line Hemacytometer)：改良牛鲍氏型，又称LEVY Hemacytometer血细胞计数板，H型凹槽形成两个计数平台，平台的每一侧(图示正上面和下面)有V型槽用来滴入待测悬液。深度：0.1mm。钻石刻蚀的精准分隔线，特别经久耐用，技术准确。

Directions for Use:

Rulings cover 9 square millimeters. Boundary lines of the Neubauer ruling are the center lines of the groups of three. (These are indicated in the illustration below.) The central square millimeter is ruled into 25 groups of 16 small squares, each group separated by triple lines, the middle one of which is the boundary. The ruled surface is 0.10mm below the cover glass, so that the volume over each of the 16 small squares is .00025 cubic mm.

Neubauer Ruling

The number of cells per cubic millimeter =
        Number of cells counted per square millimeter X dilution (if used) X 10

The number of cells per milliliter =
        Number of cells counted per square millimeter X dilution (if used) X 10,000

One (1) Milliliter = 1000 cubic millimeters (cu mm)

One (1) Microliter (ul) = One (1) cubic millimeter (cu mm)

Cleaning:

After completing the count, remove the cover glass and clean the counting chamber with water or a mild cleaning solution (10% solution of bleach). Dry the counting chamber with a soft cloth or wipe, or rinse with acetone.