Filter paper:

Api filtration test specifies one thickness of 9-cm filter paper whatman no.

50, s & s no.

576, or equivalent.

Terms Related to Filter paper

• Filter cake thickness

  A measurement of the solids deposited on filter paper in thirty-seconds of an inch during standard 30-min api filter test. See cake thickness. In certain ...

• Filter cake

  1. Compacted solid or semisolid material remaining on a filter after pressure filtration of mud with a standard filter press. Thickness of the cake is ...

• Filtration qualities

  The filtration characteristics of a drilling mud. In general, these qualities are inverse to the thickness of the filter cake deposited on the face of ...

• Gasket

  Any material (i.e., paper, cork, asbestos, or rubber) used to seal two essentially stationary surfaces.

• Filter loss

  The amount of fluid that can be delivered through a permeable filter medium after being subjected to a set differential pressure for a set length ...

• Filter press

  A device used in the testing of filtration properties of drilling mud. See mud.

• Cake thickness

  The thickness of drilling mud filter cake