Device for automatically adjusting the bacterial inoculum level of a sample

A computer program product for automatically preparing a sample having a selected concentration of particles therein and a selected volume in a sample container containing a preliminary sample, the computer program product adapted to operate a controller device in communication with an automated fluidics system and a sensor device, the computer program product comprising a computer-readable storage medium having computer-readable program code instructions stored therein comprising:

• a first set of computer instructions for automatically measuring a concentration of particles in the preliminary sample using the sensor device;
• a second set of computer instructions for determining at least one of an amount of diluent to be added to the sample container and an amount of the preliminary sample to be removed from the sample container to prepare the sample having the selected concentration of particles at the selected volume;
• a third set of computer instructions for adding the determined amount of diluent to the sample container or removing the determined amount of the preliminary sample from the sample container using the automated fluidics system in communication with the controller device, so as to prepare the sample having the selected concentration of particles.