Eijkelkamp 08.03 Membrane apparatus for pF determination (3.0 - 4.2 pF)

Applications

Soil physical laboratory research

pF determination in the lab

Irrigation research

Specifications

Maximum number of samples: 15

Sample specification: disturbed

Measuring range: 3.0 - 4.2 pF

Measured parameters: pF

Reading accuracy: 0.25 bar

Power supply: line voltage

Voltage: 230 VAC 50Hz

Weight: 95kg

Description

Method

The determination of the range pF 3.0 - 4.2 (1.0 - 15.5 bar) with the membrane apparatus does not use samples cut in sample rings, but the semi-disturbed sample is saturated before measurement in the laboratory and placed in a synthetic ring.

To reach the high values of the pF-curve, it is necessary to apply pressure, up to 15.5 bar, on the samples, as it is not possible to create that amount of suction force. On reaching the equilibrium at the desired pressure value, the samples are removed, weighed, dried and weighed again. 

For measuring larger series of samples, an additional membrane extractor can be connected parallel to the first extractor.

The set contains:

Pressure membrane extractor suitable for a maximum of 15 samples

20 bar compressor including reducing valve

Pressure gauge

Air filter

Hoses

Cellophane membrane

Filter cloth

Synthetic soil sample retaining rings

Various accessories

Additional requirements

Successful pF determination with the membrane apparatus also requires a balance, drying oven and aluminium soil sample boxes with lids. 

Manual