Marsh Funnel Viscosity Test Procedure
March Funnel

The following Marsh funnel viscosity test procedure is used for measuring funnel viscosity for  Water Based Mud, Oil Based Mud or completion fluid:

1.  Check that the narrow discharge tube at the base of the funnel is clear.

2.   Hold the Marsh Funnel upright, place a finger over the discharge tube and use a mud cup to fill the funnel until level with the wire-mesh screen, using the wire-mesh screen to remove larger particles that might block the narrow discharge tube.

3. 
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