A cover assembly for a vehicle carried open top container wherein a cover is connected at one end to a vertically adjustable tower and an opposite end to a cross member connected to a pair of pivot arms that are mounted at their lower ends to be pivoted by at least one hydraulic actuator that is mounted to the vehicle intermediate opposite ends of the container and adjacent the bottom thereof. The valve housing has a valve bore. The first pinned layer has a first pinned layer magnetic moment and is nonmagnetic layer-free. If the message has not previously been sent, the messaging server corrects the message and sends the corrected message and the message ID to the recipient client system. A suitable device therefor comprises an enclosed area with room for a specialist to carry out the adaptation and room for a patient, a monitor being provided in both places, in addition to a computer which is used by the specialist to carry out said adaptation and which provides the monitors with video sequences. The inventive concept employs impedance spectroscopy measurements and data analyses to determine IS parameters of fluids representative of a fluid formulation.