Pour the drilling fluid on the sieve and rinse it by water, then measure the sand content of the drilling fluid or barite, and can get the percentage of screen out..

The instrument is composed of the following components:

（1）The supporter assembly comprises bottom seat and supporter etc. which support the instrument.

（2）Nozzle assembly comprises nozzle, right-angle elbow and tie-in etc. which change the column steam into sector.

（3）The drilling fluid cup assembly comprises cup, cap and screen etc.

（4）The reductor assembly comprises the valve base, the valve core, the tie-in of input and output, the adjusting pressure handle, the valve body and the valve rod etc. which is a equipment to provide the experience pressure by reducing and steadying the pressure.

（5）The tap designed according to the GB/T18145-2000（1/4〞） standard which connects the water source with the instrument and controls the using water in experiment.