Pinhole test apparatus

ASTM D4647 | BS 1377:5
General description
Certain fine-grained soils with high sodium content are highly erodible by the water flowing through them. During the test the flow of water under a high hydraulic gradient through a cavity in the soil is reproduced. The test apparatus consists of a cylindrical metal container fit one end with water inlet and the other end with an outlet connection, of a standpipe tube with scale and a stand to support the pinhole apparatus.
  • Weight approx.: 3.5 kg

Ordering info

Pinhole test apparatus


Constant level tank

PVC tubing dia. 10x8 mm, 10 m coil