‘Synthetic soil’ mixes. Sometimes a soil-like porous material which is chemically inert is needed for experimental work. Soil water solutions stocks (or can get) a large range of glass bead, clay mineral, or silicate based powders which can be mixed to produce specific properties.
Price depends on the components of the mix - typically $10/kg
Examples : (call with your needs!)
a. Soil water sensor calibration mix. This material can be wet up to anywhere from 0 to 0.45 cc/cc water content and still remain non-sticky, friable and easily repacked around a sensor.
b. Tension plate mix. If you need to make a tension plate to wet soils or drain them to 9 kPa (approx field capacity) then all you need is some tubing a plastic box and some of our tension plate mix.