Rhizon Soil Solution Samplers

Rhizon Soil Solution Samplers for repeatable and reliable soil moisture sampling. Measure all dissolved components in the soil solution. For successive samples from the same volume of soil or from pots and containers, they have become the researcher’s favourite. Made from a porous and inert polymer makes them ideal for most soil solution sampling projects.

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Advantages

Rhizons are ideal for repeatable and reliable soil moisture sampling of all dissolved components in the soil solution in the field, when successive soil solution samples are needed from the same volume of soil, or in pots and containers.

Rhizon Soil Solution Samplers

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+44 (0) 1428 661 660 Call Van Walt
+64 (0)3443 5326 Call Van Walt
+27 21 518 1347

Rhizon Soil Solution Samplers Equipment Options:

Types of Rhizons

Macro Rhizons
Minimal disturbance of hydraulic properties of the soil
Minimal ion exchange capacity (less than soil)
pH is not changed by sampling
Complete sampling system
Sample is filtered and can be analysed directly
Inexpensive
Micro Rhizons
Used for all types of laboratory and field research
Small diameter, 2.5 mm
Cost effective for large scale use
Available as a complete set
Simple syringes act as pumps and samplers
Inert construction allows for no ion-exchange
Can be used to 1 meter depth and extended horizontally
Frost resistant
Low dead volume, 0.5 ml
Minimal disturbance to the soil

Applications

  • Plant uptake of soluble nutrients as nitrate
  • Solubility of metals in soil
  • Transport of soluble components in soil
  • Accumulation of salts, etc.
  • Environmental research

Specifications

Macro Rhizons
Consists of 9 cm porous material with a 4.5 mm diameter outside, strengthened by a glass fiber epoxy
Sampling is done with a syringe
Yield in water is about 10 ml/min
The yield in wet soil is typically 7 ml in 0.1 – 2 hours, depending on soil properties
Acceptable pH: 3 – 12, also depends on the corrosive properties of the soil solution
Life expectation > 6 months
Can extract soil solution from depth > 10 m
Can be extended using PVC pipe
Micro Rhizons
Bubble point > 2 bar (0.2 MPa)
Yield in water: 1 bar pressure differential: > 1 ml/min. With a 10 ml vacuum tube the yield in soil is typically 7ml in 1-16 hours (overnight), depending on soil properties
Diameter of the porous tube is 2.5 x 1.5 mm
Diameter of the PVC tube is 2.7 x 1.0 mm
Volume of the lumen 0.2 ml, total dead volume 0.5 ml
Acceptable pH: 3 – 12, also depends on corrosive properties of the soil solution
Life expectation 6 months

Accessories

Macro Rhizons
Extension pipe for MacroRhizon, length 100 cm. Set of 10 pieces
Extension pipe for MacroRhizon, length 50 cm. Set of 10 pieces
Extension tubing for MacroRhizon, length 100 cm. with connectors. Set of 10 pieces
Extension tubing for MacroRhizon, length 50 cm, with connectors. Set of 10 pieces. Including 60 cm silicone tubing 6 x 2 mm
Plastic syringe with 10 cm spacer for MacroRhizons, contents 30 ml. Set of 10 pieces
Stopcock, 2 way for sampler flushing without vacuum loss
Micro Rhizons
Silicone tubing, 6 x 2 mm, 120 cm length
Extension tubing, 1 x 3 mm, reel of 50 m
Set of needles, length 40 mm, including protection cap
Vacuum tubes
Plastic syringe with adaptor and spacer
Connectors

Resources

Manuals & Downloads

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+44 (0) 1428 661 660 +64 (0)3443 5326 +27 21 518 1347