PLT 100-Point load tester - ASTM D5731


The point load tester accurately determines the uncorrected point load strength index Is which is then converted to a point load index having a standard equivalent diameter (De) of 50 mm. The corrected Is(50) index enables rock strength classification; it can also be used to estimate the uniaxial compressive strength (UCS) and the rock’s anisotropy Ia(50). The device consists of a hydraulic ram, a manual hydraulic pump with a pressure gauge and a rigid two-column crosshead frame. Pressure applied by the pump displaces a piston carrying the lower conical platen. Pressure is directly read from the digital pressure gauge. The upper platen is fastened to the crosshead and a fixed graduated scale measures the sample diameter. The apparatus is supplied with front and rear protective shields. A carrying case is also provided to allow safe and efficient transportation. This instrument follows ASTM D5731 procedures.

For more information, please visit Floxlab's website:  floxlab


 Standard : ASTM D5731
Manufacturer : Floxlab
Load capacity: 100 kN
Maximum sample size: 4 inches (101.6 mm)
Pump pressure: 70 Mpa
Pressure accuracy : 0.2% FS
Weight: 25 kg
Dimensions : 50 x 30 x 25 cm




* Simple test
* Direct reading of specimen diameter
* Extreme rigidity
* Inexpensive instrument
* Portable, easy to carry on-site
* Attractive alternative to the UCS test because provides similar data at a lower cost