Fracture Conductivity Cells, is developed by our STIM-LAB business unit, the leading industry authority on proppant conductivity testing. When developing longterm fracture conductivity test standards, it was established that the original API RP 61 cells for short-term fracture conductivity testing were inadequate. The FCC-100 Fracture Conductivity Cell was designed, built and patented to improve there performance in long term fracture conductivity tests and are constructed using stainless steel. Core leak-off capabilities are improved and a unique removable end inserts added that enable a combination of conductivity testing and flow-back testing to be performed in the same cell. Fracture conductivity testing can be performed using gelled fluids, building filter-cake due to leak-off to give conductivity results under realistic down-hole conditions. Tests can be conducted at up to 350 °F (177 °C) and closure pressures to 12,000 psig (84 MPa). Where proppant flow-back can occur API end pieces can be simply changed out and flow-back end pieces inserted which is a unique property of the FCC-100 Cell.