Mixing chamber - for dilution and haemolysis of blood free from air bubbles

摘要

A mixing chamber is used to mix a very small blood flow of 0.1 millilitre per hr. with a diluting medium (0.5% NH3) at a rate of 1:200 by merging the streams of blood and of medium in a special way. The blood is made to leave its supply line in contact with a drop formed by the medium. The mixt. falls in drops on a plate 1 cm. below the merger and with semi-circular holes in its periphery, leading to a stirring chamber. A magnetic stirrer acts in it before the fluid reaches the photometer. The supply lines for blood and diluent and the lid of the chamber are thrown away after one use, but the rest can be re-used. ADVANTAGE - This guarantees a homogeneous mixt. The plate prevents the entrainment of air bubbles.