Patent Number: 
Section: claims

1. A sampling device for use in optically analyzing a biological fluid comprising:(i) an aspirator for aspirating the fluid into the device;(ii) a thin measuring chamber having an upper and lower wall, the distance between said walls being in the range of 100-500 microns;(iii) a thick measuring chamber having an upper and lower wall, the distance between said walls being in the range of 0.5-3 cm; and(iv) means for excluding air from said measuring chambers; wherein the upper and lower walls of said thin and thick measuring chambers are transparent and the thin measuring chamber and the thick measuring chambers are in fluid communication. 2. A sampling device for use in optically analyzing semen, the sampling device comprising:(i) an aspirator for aspirating semen into the device;(ii) a thin measuring chamber having an upper and lower wall, the distance between said walls being in the range of 100-500 microns;(iii) a thick measuring chamber having an upper and lower wall, the distance between said walls being in the range of 0.5-3 cm; and(iv) means for excluding air from said measuring chambers; wherein the upper and lower walls of said thin and thick measuring chambers are transparent and the thin measuring chamber and the thick measuring chambers are in fluid communication. 3. A device according to claim 1 wherein the distance between said walls of said thin measuring chamber is in the range of 250-350 microns. 4. A device according to claim 1 wherein the distance between said walls of said thick measuring chamber is in the range of 0.8-1.2 cm. 5. A device according to claim 1 wherein said aspirator comprises a cylinder and a plunger. 6. A device according to claim 1 wherein said means for excluding air comprises a valve positioned in between said measuring chambers and said aspirator. 7. A device according to claim 1 further comprising an adapter for aligning the device in an optical instrument. 8. A device according to claim 1 which is disposable.