1 / 31

Sampling and Inspecting Grain

Sampling and Inspecting Grain. Lectures 25. Official US Standards for Grain. 1968; USDA-FGIS 1974 GIPSA http://www.usda.gov/gipsa 3 million inspection/year by > 1000 fed. Inspectors in 25 states. Physical and biological properties of grain; ensure proper marketing of grains.

devaki
Download Presentation

Sampling and Inspecting Grain

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sampling and Inspecting Grain Lectures 25

  2. Official US Standards for Grain • 1968; USDA-FGIS 1974 • GIPSA • http://www.usda.gov/gipsa • 3 million inspection/year by > 1000 fed. Inspectors in 25 states. • Physical and biological properties of grain; ensure proper marketing of grains. • Grain inspection requires proper sampling procedures. • Representative sample. • Domestic grain vs export grain.

  3. Elevators Primary sampler Secondary sampler Collection box Traverses once/3 min for 4000 bu/hr Objectionable odors, infestation, uniformity

  4. Pelican Sampler • One cut/500 bu. of falling stream. • Hopper car - 2 cuts per compartment • Box car – 4 cuts • Truck – 2 cuts • Barge/ship 1 cut/500 bu.

  5. Ellis Cup • One scoop /500 bu.; 3 such scoops make a set (Representative sample). • Hopper car - 2 sets/compartment • Box car - 4 sets • Truck - 2 sets • Barge/ship 1 set/500 bushels

  6. Trier Length for Different Carriers

  7. Used to sample grain at rest. • Need canvas or bags to carry samples. • More probe samples can be taken by sampler if needed.

  8. 1 trier/compartment

  9. Same as trier samples for trucks More dust than trier samples

  10. Performance and Accuracy • Diverter-type samplers – most accurate • Woodside type and Ellis cup have same accuracy, except in soybeans. • Pelican similar to diverter-type samplers (operator error) • Trier sampling of hopper cars, etc. affected by variability within the grain mass

  11. Inspection and Grading • Condition factors • Grade-determining factors • Non-grade determining factors

  12. Condition Factors • Heating • Odor (sour, musty, commercially objectionable foreign odors)

  13. Infestation • Special grade factors (smutty, garlicky) • Distinctly low quality (toxic seeds) Unacceptable levels of any of these factors makes Grain a Sample Grade or it will be assigned a special grade

  14. Grade Determining Factors • Test wt. • Foreign material • Damaged kernels • Other classes

  15. Non-Grade Determining Factors • Moisture • Dockage • Small grains • Protein in wheat and soybeans • Oil in soybeans and sunflower seeds • Aflatoxin in corn

  16. Sample • Work sample • File sample • Moisture sample

  17. Inspection Tools

More Related