Ribbon test
Definition
A field method for estimating texture by wetting a small amount of soil and extruding it between thumb and finger. The length and feel of the ribbon gives a rough estimate of clay content without instruments.
Related terms
- Hydrometer method
- A sedimentation technique that uses Stokes' Law to determine the proportion of silt and clay from the rate at which particles settle...
- Laser diffraction
- An instrumental method where a dispersed sample passes through a laser beam and the angular diffraction pattern is inverted to produce a...
- Particle-size distribution (PSD)
- The proportion by mass of soil particles falling within each size fraction. Expressed as a curve or a table of percentages, and...
- Sieve analysis
- Mechanical separation of soil particles by passing a dried, dispersed sample through a stack of sieves with calibrated apertures from 2 mm...
- Textural triangle
- A ternary diagram with sand, silt, and clay at the three apices. A point plotted from the measured percentages of those three...
Explained in
- Particle Size and Texture AnalysisA field method for estimating texture by wetting a small amount of soil and extruding it between thumb and finger. The length and feel of the ribbon gives a ro...