slot test(The slot test gives an indication of the ability of a lost circulation material plug to withstand pressure. Since formation breakdown can occur before the average seal with blowout, this test is not as indicative of a lost circulation materials effectiveness or merits as wedge or sphere test. ixtra)
Permeability Plugging Tester(The Permeability Plugging Tester (PPT), is a modification of the 500 ml high pressure, high temperature filter press. The instrument is used for making filtration tests on plugging materials without the interference of particle settling on the filter medium. ixtra)
