Standard Winchester Bushel & Funnel Measure (1-Liter)
Ensures standardized free-fall dropping height and packing density in bulk volume cylinders.
Agricultural Engineering / Grain Gravimetric Properties
FREE TO EXPLORELABORATORY 25 · AGRICULTURAL ENGINEERING
Physical & Gravimetric Properties: Bulk Density, Porosity & Sphericity of Seeds
Determine the true density, bulk density, porosity, thousand-grain mass, and sphericity of cereal grains and verify the linear mass-volume relation in bulk storage. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
MEASURED BULK GRAIN MASS M_B—
FIELD & TEST CELL TELEMETRY
Ready to sample with Volume V_b = 260.0 mL.
Adjust Volume V_b, then execute agricultural trial.
Agricultural engineering telemetry and biosystems states are evaluated rigorously using 64-bit IEEE 754 precision. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity agricultural and environmental modeling.
Agricultural assumptions and boundary condition limits
Laboratory small-cylinder bulk densities are slightly lower than deep silo densities where thousands of tons of overburden compact the grain. Evaluated using clean seed wheat at 12.5% moisture (true kernel density ρ_t = 1.340 g/mL, porosity ε = 41.4%) across standardized graduated cylinders.
Agricultural apparatus & field instrumentation sensors.
Gas Displacement Helium Pycnometer
Measures true solid volume and true density of grain kernels with 0.001 g/cm³ accuracy.
Electronic Digital Analytical Balance (0.01 g)
Weighs bulk grain samples and thousand-grain lots with high precision.
Digital Vernier Micrometer Caliper (0.01 mm)
Measures principal tri-axial dimensions (length L, width W, thickness T) of 100 kernels.
Electronic Seed Counter (Automatic Carousel)
Counts exactly 1000 sound kernels for Thousand-Grain Weight (TGW) determination.
Graduated Glass Cylinders (100 to 500 mL)
Measures bulk volumes under standardized strike-off filling.
FOLLOW THE METHOD
A reason behind every step.
Determine the true density, bulk density, porosity, thousand-grain mass, and sphericity of cereal grains and verify the linear mass-volume relation in bulk storage. Standardized parameter settings: 100.0, 180.0, 260.0, 340.0, 420.0, 500.0 mL.
01
Funnel Hopper Standardization
Position the standard filling funnel 5.0 cm above the graduated cylinder, ensuring the discharge shutter is centered and level.
02
Initial 100 mL Bulk Filling
Pour wheat into the funnel, open the shutter to allow free-fall filling into the 100 mL cylinder until overflowing, and strike off excess grain level with the rim using a wooden straightedge.
03
Bulk Mass Determination
Weigh the filled cylinder, subtract tare mass, and record bulk grain mass m_b (g) for V_b = 100.0 mL.
04
Volume Incrementation
Repeat standardized filling across cylinders of 180, 260, 340, 420, and 500 mL, recording mass m_b for each volume.
05
True Density & Porosity Determination
Place 50 g of wheat into the helium pycnometer to measure true volume and calculate true density ρ_t, then compute porosity ε = (1 - ρ_b / ρ_t) × 100%.
06
Linear Bulk Density Regression
Plot bulk mass m_b versus volume V_b, perform linear regression through the origin, and determine the bulk density slope ρ_b.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Grain Gravimetric Properties mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
m_b = ρ_b · V_b = 0.7850 · V_b
| # | Standard Bulk Volume V_b (mL) | Measured Bulk Grain Mass m_b (g) | Bulk volume V_b (mL) | Bulk grain mass m_b (g) | Remove |
|---|
No readings yet. Execute an agricultural trial and record it.
Calculate it yourself.
CHECK YOUR UNDERSTANDING