The Miller Soil Cylinder can be used to satisfy either of the 2-electrode methods (ASTM G187 or AASHTO T-288 Standards).
Based on the geometry of the cylindrical system [interior diameter =16.5 cm (approx) and separation between the conducting end plates = 13 cm (approx)], the multiplication factor for the soil cylinder is 16.25 cm.
The body of the Soil Cylinder comprises Plexiglas (allowing easy viewing of sample) and PVC components and the current distribution plates (conducting end plates) are stainless steel. Rubber O-rings provide sealing for the two end caps.
- Large sample volume [approximately 2,714 cm³ (2.714 liters)]
- Can accommodate crushed-rock samples as well as regular soils and liquids
- Water can be added in-situ for sample saturation (de-ionized water, simulated rain water etc.)
- Closed, air-tight volume - Field collected samples can be immediately "installed" in the cylinder, as opposed to filling a separate container for transportation, in which case the samples are stored under air-tight, sealed conditions. This means that resistance readings taken at a later stage will be representative of the "as-found" condition of the sample
- Cylinder can act as a "mold" for crushed rock sample creation
Soil Cylinder Example: M.C.Miller Factory Tap Water
|Measured Resistance||=118 Ω|
|Resistivity Value||=118 Ω x 16.25 cm|
|[Hence, MCM Water Conductivity = 521 µS/cm]|
- Sample Volume: 0.717 gal (2.714 Liters) (2,714 cm³) (165.627 in³)
- Interior Diameter: 6.5 inches (16.5 cm)
- Separation between the conducting end plates: 5.12 inches (13.0 cm)