| 摘要 |
1388783 Determination of CO 2 in blood AMERICAN HOSPITAL SUPPLY CORP 20Feb 1973 [22Feb 1972] 8278/73 Heading G1B The carbon dioxide content of a blood sample is measured using apparatus Fig. 1 comprising gas-tight syringe 1 having transparent barrel 2 with graduation markings, and slidable plunger 3, vial 6 for containing a measured volume of blood, and threaded or clamp means releasably coupling the syringe and the vial, the test being carried out by taking a quantity of acid, for example lactic acid into the syringe, coupling the syringe and vial, depressing the plunger to add the acid to the blood sample, shaking the coupled assembly and allowing the plunger to rise under the pressure of the carbon dioxide released in the vial. The coupling means may be clamp means 10 having spring loaded jaws 11, 12 which bear on flange 5 of the syringe and flange 6a of the vial, or the coupling means may comprise screw threads formed on the lower end of the syringe barrel and on the vial. |
