An apparatus for dispersing microbes in a biological sample and measuring turbidity of the biological sample, the apparatus comprising: an ultrasonic transducer having a transducer head portion that generates ultrasonic vibrations; a photo diode for measuring the biological sample's turbidity; characterized in that that the apparatus further comprises: a container-receiving guide block for holding a container of the biological sample in an operating configuration in which the container's bottom end and the transducer head come in direct contact, wherein the container-receiving guide block has a top end and a bottom end and a sidewall defining a longitudinally oriented bore extending from the top end to the bottom end of the container-receiving guide block for receiving the container, wherein the bottom end aligns container's bottom end with the transducer head; a light source for shining light into the biological sample for measuring the turbidity of the biological sample, wherein the light source is provided with a hole for receiving the container therethrough and the hole is aligned with the longitudinally oriented bore of the container-receiving guide block; a lid assembly, movable between an open position and a closed position, that is configured and adapted for engaging the container a and urge the container toward the transducer head when the container is being held by the container-receiving guide block and the lid assembly is in the closed position, so that the container bottom surface is in direct contact with the transducer head and the ultrasonic vibrations generated by the transducer head is transmitted through a container wall to the sample and disperse the microbes in the sample; wherein the lid assembly is provided with a spring-loaded mechanism formed by a hub and a receptacle nested inside the hub for engaging the top end of the container and urge the container toward the transducer head, wherein the hub is affixed to the lid assembly and having an opening through which the receptacle is received within the hub a and configured to slide up and down, wherein the receptacle having a cavity defined by its sidewalls for receiving the top end of the container, the hub and the receptacle forming a chamber between the sidewalls of the receptacle and the hub wherein a coil spring is captured inside the chamber and urges on the receptacle downward; and an opening provided on the sidewall of the container-receiving guide block, the opening providing a viewing access to the container for the photo diode for measuring the sample's turbidity. an ultrasonic transducer having a transducer head portion that generates ultrasonic vibrations; a photo diode for measuring the biological sample's turbidity; a container-receiving guide block for holding a container of the biological sample in an operating configuration in which the container's bottom end and the transducer head come in direct contact, wherein the container-receiving guide block has a top end and a bottom end and a sidewall defining a longitudinally oriented bore extending from the top end to the bottom end of the container-receiving guide block for receiving the container, wherein the bottom end aligns container's bottom end with the transducer head; a light source for shining light into the biological sample for measuring the turbidity of the biological sample, wherein the light source is provided with a hole for receiving the container therethrough and the hole is aligned with the longitudinally oriented bore of the container-receiving guide block; a lid assembly, movable between an open position and a closed position, that is configured and adapted for engaging the container a and urge the container toward the transducer head when the container is being held by the container-receiving guide block and the lid assembly is in the closed position, so that the container bottom surface is in direct contact with the transducer head and the ultrasonic vibrations generated by the transducer head is transmitted through a container wall to the sample and disperse the microbes in the sample; wherein the lid assembly is provided with a spring-loaded mechanism formed by a hub and a receptacle nested inside the hub for engaging the top end of the container and urge the container toward the transducer head, wherein the hub is affixed to the lid assembly and having an opening through which the receptacle is received within the hub a and configured to slide up and down, wherein the receptacle having a cavity defined by its sidewalls for receiving the top end of the container, the hub and the receptacle forming a chamber between the sidewalls of the receptacle and the hub wherein a coil spring is captured inside the chamber and urges on the receptacle downward; and an opening provided on the sidewall of the container-receiving guide block, the opening providing a viewing access to the container for the photo diode for measuring the sample's turbidity.