초록 ▼

An apparatus for testing the effects of an antibiotic of chemical on a bacterial or biochemical substance of the type having a plurality of side-by-side test chambers each separated from the other by a side wall and having a common reservoir disposed adjacent each test chamber and separated therefro

An apparatus for testing the effects of an antibiotic of chemical on a bacterial or biochemical substance of the type having a plurality of side-by-side test chambers each separated from the other by a side wall and having a common reservoir disposed adjacent each test chamber and separated therefrom by a barrier having a height less than the height of each side wall is characterized by an array of guide walls disposed in the reservoir, each guide wall merging into one of the side walls and cooperating with next-adjacent guide wall to define an array of channels. Each channel communicates with one of the test chambers and each channel is adapted to conduct a liquid disposed in the reservoir into the test zone with which it is associated upon rotation of the apparatus about an axis of rotation.

대표청구항 ▼

In an apparatus for testing the effects of an antibiotic or chemical on bacterial or biochemical substances, said apparatus being of the type having: (a) a plurality of side-by-side test chambers each adapted to receive therein a bacterial or biochemical substance, each test chamber being separated

In an apparatus for testing the effects of an antibiotic or chemical on bacterial or biochemical substances, said apparatus being of the type having: (a) a plurality of side-by-side test chambers each adapted to receive therein a bacterial or biochemical substance, each test chamber being separated from the next-adjacent test chamber by a side wall; (b) a common reservoir disposed adjacent each of the test chambers, the reservoir being separated from each of the test chambers by a barrier having a height less than the height of the side walls, the reservoir having an axis of rotation extending therethrough; wherein the improvement comprises: an array of guide walls disposed within the reservoir, each guide wall merging into one of the side walls and cooperating with its next-adjacent guide wall to define an array of channels, each channel communicating with one of the test chambers and each adapted to channelize a liquid disposed in the reservoir into the test chamber with which it is associated upon rotation of the apparatus about the axis of rotation such that a flow of liquid is maintained from the reservoir to each test chamber even if the apparatus is tilted during rotation thereof about the axis of rotation. A method for testing the effects of an antibiotic or chemical on bacterial or biochemical substances comprising the steps of: introducing a liquid suspension containing an antibiotic or chemical to be tested into a common reservoir of a test apparatus until the level liquid in the reservoir lies above the lower end of an array of guide walls disposed within the reservoir; rotating the apparatus about an axis of rotation to cause a channelized flow of liquid from the reservoir into each of a plurality of test chambers disposed in fluid communication with the reservoir; and observing each of the plurality of test chambers to test the affects of the antibiotic or chemical on the bacterial or biochemical substances.