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Pressure Membrane Extractor 15Bar

The Model 1000 Pressure Membrane Extractor incorporates disposable cellulose membranes in the extraction of water from soil samples over a pressure range of 0 to 15 bars. A compression diaphragm in the lid holds the samples in firm contact with the membrane, ensuring proper hydraulic contact needed for the extraction process. The Pressure Membrane Extractor includes the following components: top and bottom plates, 5/8" (1.6 cm) high by 11" (28 cm) inside diameter cylinder and clamping bolts, cylinder seal O-rings, screen drain plate, compressing diaphragm, and eccentric clamping screw assembly. Connecting hoses (2 required), cut celullose membrane discs, PM Hinge, and torque wrench with socket are ordered separately. Soil sample retaining rings and cylinders of various heights are available separately.
Water retention curves from shrink / swell soils – 15 Bars
Pressure Membrane Extractor 0 to 15 bar

A common problem in soils research is determining water retention curves for various soil types. The problem is that many soils around the world that provide excellent plant growth potentials are "shrink -swell" soils. This applies to non soil experiments where the material under study curls as it dries.

The model 1000 is a pressure / membrane type extractor. It is designed to contain shrink-swell soils during extraction. A special EDPM rubber hold down diaphragm is inflated, with 4lbs (1.81Kg) of force holding the soil in hydraulic contact with the cellulose membrane surface. The cellulose membrane material is a pure cellulose and has a pore size of 24 angstrom. The cellulose membrane can withstand over 10,000 kPa bubbling pressure. The standard model 1000 (1002G1) can test up to 12, 2” diameter x 0.39 “ (2.5 x 1 cm) high samples and operates in the 0 to 1500 kPa (0 to 15 bar) soil suction. Choose an optional PM cylinder height, to handle undisturbed cores up to 3 inch high.

Dimensions 18” L X 18” W X 14” H (45.72 cm X 45.72 cm X 35.56 cm),
Weight: 72 lbs. (32.66 kgs)

Ordering Information:
1000 15 Bar Membrane Extractor

1002G1 Standard 5/8” (1.58 cm) cylinder, weight 2.8 lbs (1.3 kgs)
1002G2 Tall 1-1/4” (3.2 cm) cylinder, weight 6.7 lbs (3.0 kgs)
1002G3 Extra tall 1-7/8” (4.75 cm) cylinder, weight 10.7 lbs (4.8 kgs)
1002G4 Super tall 3-1/2” (8.8 cm) cylinder, weight 19.8 lbs (9.0 kgs)

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1800 622 343
New Zealand
0800 623 336