Texas A&M AgriLife Research
Office of the Texas State Chemist
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APTECA Proficiency Testing (PT) Program for Aflatoxin, Fumonisin & DON
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ISO/IEC 17025:2017 Chemical Testing
ISO 17034:2016 Reference Material Production
ISO/IEC 17043:2010 Proficiency Testing Provider
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Quality Control Tools
**
Z-score Calculator
Can be used to calculate your laboratory’s z-score after results have been published or when needed for corrective action follow-up.
Dixon Outlier SOP
Dixon Outlier Calculator
Statistical Process control macro
** For reference purposes only; Not to be used for meeting regulatory or accreditation purposes.
OTSC Agricultural Analytical Service Accreditations
ISO/IEC 17025:2017 Chemical Testing
ISO 17034:2016 Reference Material Production
ISO/IEC 17043:2010 Proficiency Testing Provider
APTECA
One Sample Strategy
2024 Program
Changes to 2024 Progam
Current lab must
select analytes & update contact information
to receive samples
2024 Program Dates
Round 1 (Aflatoxin, Fumonisin & DON)
Samples mailed: February 15, 2024
Results Due: May 17, 2024 (Revised)
Reports Due: May 30, 2024 (Revised)
PT Participants
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Enter or Review Your Laboratory's Results
View Proficiency Testing Reports
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PT Program Evaluation (Feedback)
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