DMT Membranes of  0.30 mm thickness are recommended in dense sand and/or in presence of gravel.
These DMT membranes are the most resistant to damage and wear. Their lower sensitivity make them inadequate for very soft soils.
 
Important Note: When replacing the 0.30 mm membranes, a higher pressure must be applied for their exercise.
Specific instructions and calibration ranges may be provided by the supplier.
 
Weight: 0.012kg
Dimensions: 5mm x 80mm x 80mm