postharvest / Grain producers, elevators, inspectors, laboratories, buyers, food and feed safety teams, advisers, regulators and safety professionals
Grain mycotoxin sampling and custody audit
Audit a grain mycotoxin evidence chain from lot definition through authorized incremental sampling, aggregate sample, preparation and reduction, custody, method, result, uncertainty, holds, affected descendants and disposition authority.
See the whole mission
Orient before entering the field.
Connect the intended outcomes, operating stages, stop conditions, and supporting technology concepts before opening the detailed action sequence.
- 01Define the exact grain lot and decision purpose
- 02Verify use of the current authorized sampling and testing procedure
- 03Trace every aggregation, preparation, division and custody event
- 04Separate analytical result from hold, release and disposition authority
- 01Freeze lot, purpose and authority
Official inspection, regulatory, contract, buyer, screening and investigative samples may follow different current requirements and support different conclusions.
3 field actions ↓ - 02Audit representative sampling safely
Heterogeneous contamination and unsafe grain access make sample design and worker protection central to the evidence.
3 field actions ↓ - 03Trace preparation and method
Grinding, mixing, subdivision, transfer and test-portion selection can change which material reaches the analytical method.
3 field actions ↓ - 04Close result, hold and disposition
The method result is evidence for the tested portion; regulatory, contract and food- or feed-safety authority determines what happens to the lot.
3 field actions ↓
- G01
This guide reproduces no sampling procedure, increment count, preparation method, test parameter, threshold or disposition rule.
- G02
Never enter or walk on grain, bypass machinery controls or expose workers to dust or mold to obtain a sample.
- G03
Use current USDA, FDA, jurisdictional, buyer, contract and laboratory requirements and qualified inspectors and safety professionals.
Freeze lot, purpose and authority
Official inspection, regulatory, contract, buyer, screening and investigative samples may follow different current requirements and support different conclusions.
- 01Record commodity, physical lot boundaries, quantity, storage or flow state, origin and history, ownership, destination and descendant lots
- 02Record sampling and test purpose, controlling authority, current procedure and version, qualified sampler, laboratory or approved test site, contract and decision owner
- 03Place the lot on the required hold or control status before sampling when the applicable program requires it
Audit representative sampling safely
Heterogeneous contamination and unsafe grain access make sample design and worker protection central to the evidence.
- 01Verify authorized equipment, safe access and procedure for the exact stationary or moving lot; never improvise increment locations or counts
- 02Record increment identity or sequence as required, aggregate sample identity, sampler, time, lot state, deviations, rejected increments, seals and custody
- 03Keep dust, mold, respiratory, engulfment, entanglement, fall, electrical and traffic controls independent of sampling goals
Trace preparation and method
Grinding, mixing, subdivision, transfer and test-portion selection can change which material reaches the analytical method.
- 01Record receipt and condition, aggregate identity, preparation and division procedure, equipment, cleaning, retained portions, transfers and responsible people
- 02Record method and version, instrument or laboratory, test portion, controls, calibration or verification context as required, repeats, qualifiers, units and report revision
- 03Preserve failed controls, deviations, invalid tests and superseded results rather than selecting a preferred value
Close result, hold and disposition
The method result is evidence for the tested portion; regulatory, contract and food- or feed-safety authority determines what happens to the lot.
- 01Link result to sample, aggregate, lot, current location, descendants, ownership, contract and applicable regulatory framework
- 02Record notification, confirmatory or appeal path, continued hold, release, segregation, diversion, return, reprocessing or disposal authority
- 03Preserve uncertainty, affected shipments, corrections and retained records and define any authorized resampling
Continue through the operation
See where this field guide fits.
Move beyond one task into the complete evidence, technology, operating, and review sequence around it.
Follow grain from harvest through governed storage
Move from harvest context through lot identity, drying, aeration, stored-grain monitoring, inventory reconciliation, representative mycotoxin sampling, holds and governed disposition without issuing dryer settings, storage limits or food and feed safety conclusions.
- 01 / HARVESTBegin with harvest verificationField guide→
- 02 / IDENTIFYUnderstand grain lot custodyTechnology→
- 03 / DRYUnderstand drying assuranceTechnology→
- 04 / AUDIT DRYINGAudit one drying periodField guide→
- 05 / AERATEUnderstand aeration controlTechnology→
- 06 / AUDIT AIRAudit the aeration loopField guide→
- 07 / MONITORReview stored-grain conditionField guide→
- 08 / RECONCILEAudit inventory and custodyField guide→
- 09 / SAMPLEUnderstand mycotoxin evidenceTechnology→
- 10 / GOVERNAudit sampling, hold and dispositionField guide
Audit sampling, hold and disposition
Trace authorized sampling and testing through custody, uncertainty, descendants, notifications and final authority.