RRP - Rhizons
Rhizon samplers can extract small volumes of pore water from soil and sediments, in an easy, non-destructive, repeatable way. They can be used for sampling water from unsaturated soils as well as from saturated zones and the extract can be used for the measurement of dissolved compounds such as nutrients, dissolved organic carbon or pollutants.
RRP-Rhizon samplers are used for (un-)disturbed soils (see types below), and are thus ideal to be positioned in Rhizoboxes and RhizonBoxes. Especially RhizonBoxes can be equipped with special openings on the side wall (e.g. at different depth) to insert special Rhizon samplers (with sleeve to prevent leakage of water from the RhizonBox) before or after soil filling. They can be used to collect water from larger zones (length of porous parts: 5 cm or 10 cm) for analyzing macro and micro elements, dissolved organic carbon (DOC) and dissolved gases. Using Rhizons with a 10 cm porous part, maximum yield of water is approximately 4 ml per minute. See below for the four types of Rhizon samplers:
Rhizon SMS. For installation in disturbed soils, lab, greenhouse, and in upper layer in the field. For analysing macro elements, not suitable for analyzing metals and DOC. SS 316 strengthener wire can be bent permanently.
Rhizon MOM. For installation in disturbed soils, lab and greenhouse. For analysing macro and micro elements, dissolved gases and DOC. MOM samplers have a tip with a bulb (2.8 mm) and need several hours or days to achieve a good contact between soil and sampler. Strengthener is a a glass fibre wire.
Rhizon CSS. For direct sampling in cores and undisturbed soils. For analysing macro and micro elements, dissolved gases and DOC. CSS samplers have a flat tip (2.5 mm) of the diameter of the porous part. The direct contact between the soil and the porous part makes CSS samplers suitable for immediate sampling. Strengthener is a a glass fibre wire.
Rhizon Flex. For disturbed soils, only fit to be positioned during the filling of Rhizo(n)boxes or pots. For analysing macro and micro elements, dissolved gases and DOC. Strengthener is a a nylon wire.
Each Rhizon type is available in 6 varieties:
- with a 5 cm or 10 cm porous part
- with a male luer lock - suitable for creating a vacuum with needles + vacuum tubes, or with a female luer lock - suitable for creating a vacuum with syringes
- with 0.15 µm or 0.60 µm pore size.
See Table 2 on our website for details. Please make sure to ask for silicon sleeve versions (i.e RRP product number # + S) during ordering (if required for sealing the holes in the side walls of Rhizonboxes) as they cannot be retrofitted!