| 摘要 |
<p>A counting chamber for determining the number of particles present in a fluid, which counting chamber substantially consists of two parallel, at least partially transparent plates (1, 2) which are bonded together by means of an adhesive (3), and between which a practically entirely enclosed space (5) is present, which space has a substantially constant dimension in the direction perpendicularly to said plates. The facing sides of the plates (1, 2) are substantially flat, and said dimension of the space is substantially equal to the thickness of the adhesive layer present between the plates. The adhesive (3) contains glass spheres (7, 8) having a predetermined maximum diameter, which diameter corresponds with said dimension of the space. The glass spheres may be obtained by sifting spheres of various diameters.</p> |
