Current Samples, Reports and Data

Regular Scheme

JAN 2026 260111 COA Analyte Report Method Report MAP
FEB 2026 260213 COA Analyte Report Method Report Urea (shared)
MAR 2026 260311 COA Analyte Report Method Report Gypsum
APR 2026 260411 COA Analyte Report Method Report DAP
MAY 2026 260511 COA Analyte Report Method Report 5-0-20
JUN 2026 260611 COA Analyte Report Method Report Calcium Nitrate
JUL 2026 260714 COA Analyte Report Method Report Macro-Micro-Humic (shared)
AUG 2026 260811 COA Analyte Report Method Report NPK 21-7-14 w/S
SEP 2026 260911 COA Analyte Report Method Report Urea + Inhibitor
OCT 2026 261011 COA Analyte Report Method Report Liquid Ammonium Polyphospate
NOV 2026 261111 COA Analyte Report Method Report 19-19-19
DEC 2026 261215 COA Analyte Report Method Report KCI (shared)

N Scheme

FEB 2026 260213 COA Analyte Report Method Report Urea (shared)
JUN 2026 260631 COA Analyte Report Method Report UAN
OCT 2026 261031 COA Analyte Report Method Report Ammonium Sulfate

P Scheme

MAR 2026 260341 COA Analyte Report Method Report MAP & DAP w/ S
JUL 2026 260714 COA Analyte Report Method Report Macro-Micro-Humic (shared)
NOV 2026 261141 COA Analyte Report Method Report Phosphate Rock

K Scheme

APR 2026 260451 COA Analyte Report Method Report Potash 0-0-60
AUG 2026 260851 COA Analyte Report Method Report K-Mg-SO4
DEC 2026 261215 COA Analyte Report Method Report KCI (shared)

  • Future samples scheduled subject to change.
  • Click on COA to view the Certificate of Analysis based on participant results
  • Click on analyte report or method report to open proficiency reports.
  • Click on the Sample Description (Eg: DAP) to view guarantees and SDS.
  • Colored cells denote samples shared across sample schemes
  • For older reports, visit the Past Reports page, or for historical data (2021 and previous years) visit the Archived Data Page.