Pore water probing
Pore water probing - Polyethersulfon is used as a semi-permeable polymer from which small tubes (1 mm diameter, 50 mm length) were manufactured. Polymer micropores discriminate colloidal fractions > 0.1 um. This mesh size is impermeable to bacteria, so pore water that passes the polymer is sterile. A 0.5 mm fiberglass needle is mounted inside the probe for robustness. The probe is mounted on an impermeable HDPE tube (1 mm diameter, 20 mm length), so the area adjacent to the wall is avoided during pore water. By applying small under-pressure to the probes, pore water passes the polymer. Adhesive force along the fiberglass core guides the sample to the outlet.
