pore water samplers for field research & monitoring

Field LysimetersMacroRhizons are developed for field research. They have a porous part with an outer diameter of 4.5 mm and a pore size of 0.15 µm. MacroRhizons are only available with female luer lock, suitable for creating a vacuum with syringes. The yield of water is approximately 20 ml/minute.

MacroRhizons have to be inserted at 30 to 45 degrees in an augured hole, or horizontal in the field, to prevent rain water infiltration along the PVC pipe directly to the porous part.


related products

19.21.35 10 x MacroRhizon, 9 cm porous part, 4.5 mm outer diameter, lumen filled with glass fiber epoxy rod, coated with ABS, very strong. Female luer lock, for syringes only
19.21.36 10 x MacroRhizon, the same as 19.21.35, but fixed in 90 cm PVC pipe 5/8 “, with protective cap for MacroRhizon tip + 0.9 m extension tubing PVC/PE, 2 way luer lock stopcock and bicap
19.21.38 10 x MacroRhizon, the same as 19.21.36, but with 30 cm PVC tube 5/8”
19.21.39 10 x MacroRhizon, the same as 19.21.36, but with 60 cm PVC tube 5/8”

equipment for MacroRhizons
19.21.37 10 x MacroRhizon Cup, only fit for 19.21.35, 19.21.36, 19.21.38 and 19.21.39
19.21.51 1 x Insertion tool for MacroRhizon, 4 mm diameter SS pin, 10 cm, supplied with 1 m PVC pipe
19.21.55 1 x MacroRhizon Cup Driver, to screw/unscrew MacroRhizon Cups (19.21.37)

An instruction for the installation of MacroRhizons with the Insertion Tool is available for download.


sampling accessories

Before you can take your samples, you will need additional accessories to create a vacuum. This can be either a syringe or a vacuum tube. For field experiments, extension tubing might be useful. We could advise you about the best accessories for your experiments.


specifications of the microfiltration membrane


Basic characteristics

  • Microfiltration membrane with a nominal pore size of 0.12 – 0.18 µm
  • Hydrophilic membrane composed of a blend of polyvinylpyrrolidine and polyethersulfone
  • Structure asymmetric/microporous
  • High performance and a very good anti-fouling behaviour
  • Suitable for filtatrion outside-in and inside-out


Performance data

pH-range 2 – 12
Temperature 1 – 90ºC
Pressure -300 – +300 kPa


    Solvent resistance

       Solvent  Resistance




       Organic esters, ketones, ethers

       Aliphatic alcohols


       Aliphatic hydrocarbons


       Halogenated hydrocarbons

       Aromatic hydrocarbons

       Polar organic solvents





        Store in a dry, normally ventilated place, away from sources of heat, ignition and direct sunlight. Store between 0 and 50 ºC (32 – 122F). The membrane modules should not be subjected to any freezing temperatures.



        MacroRhizon Manual


        further information