Schedules

ISO 17043-Accredited PT Programs Available:

Environmental PT

  • Matrices: Drinking Water, Wastewater, Soil, Sludge, Hazardous Waste
  • Analytes: Comprehensive, US EPA-centered

Food PT

  • Matrices: Meat, Dairy, Grain
  • Analytes: Nutritional Proximates, Elements, Allergens

Nutraceutical & Cannabis PT

  • Matrices: Plant Material, Oil, Chocolate Edible
  • Analytes: Comprehensive
2024 NSI Proficiency Study Schedule
Non Potable Water – Wastewater – Chemistry PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
21 days after study closure
Last Order Date USALast Order Date International Outside USA
WP-297*January 16, 2024March 01, 2024March 22, 2024NANA
WP-298March 11, 2024April 24, 2024May 15, 2024NANA
WP-299*April 16, 2024May 30, 2024June 20, 2024NANA
WP-300May 07, 2024June 20, 2024July 11, 2024NANA
WP-301*July 16, 2024August 29, 2024September 19, 2024August 22, 2024August 15, 2024
WP-3021August 06, 2024September 19, 2024October 10, 2024September 15, 2024September 05, 2024
WP-303*October 08, 2024November 21, 2024December 12, 2024November 14, 2024November 07, 2024
WP-304November 05, 2024December 19, 2024January 09, 2025December 12, 2024December 05, 2024
*Denoted full organic and inorganic PT schemes are available during the study.  All others are inorganic only PT studies.
1This study number complies with NJ DEP September non-potable water PT study schedule.  NJ DEP complaint analysis should occur between September 1-19, 2024.
Non Potable Water – Wastewater – Microbiological PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
21 days after study closure
Last Order Date USALast Order Date International Outside USA
MP-201January 08, 2024February 21, 2024March 13 2024NANA
MP-2021March 05, 2024April 18, 2024May 09, 2024NANA
MP-203April 08, 2024May 22, 2024June 12, 2024NANA
MP-204July 10, 2024August 23, 2024September 13, 2024August 16, 2024August 09, 2024
MP-2052September 03, 2024October 17, 2024November 07, 2024October 10, 2024October 03, 2024
MP-206October 22, 2024December 05, 2024December 26, 2024December 28, 2024December 21, 2024
1 This study number complies with NJ DEP March non-potable water PT study schedule. NJ DEP complaint analysis should occur between March 1-April 18, 2024.
2This study number complies with NJ DEP September non-potable water PT study schedule.
DMRQA-44 Study
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
DMRQA-44May 17, 2024August 30, 2024September 27, 2024
DMRQA study schedule will be posted on the website when announced by the US EPA.
Potable Water – Drinking Water Chemistry PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
21 days after study closure
Last Order Date USALast Order Date International Outside USA
WS-1371January 08, 2024February 21, 2024March 13 2024NANA
WS-138April 03, 2024May 17, 2024June 07, 2024NANA
WS-1392July 02, 2024August 15, 2024September 05, 2024August 08, 2024August 01, 2024
WS-140October 15, 2024November 28, 2024December 19, 2024November 21, 2024November 14, 2024
1 This study number complies with NJ DEP March drinking water PT study schedule.
2 This study complies with NJ DEP July drinking water PT study schedule.
Potable Water – Drinking Water – Microbiological PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
21 days after study closure
Last Order Date USALast Order Date International Outside USA
MS-2411January 03, 2024February 16, 2024March 08, 2024NANA
MS-242*March 04, 2024April 03, 2024April 24, 2024NANA
MS-243April 02, 2024May 16, 2024June 06, 2024NANA
MS-244*June 05, 2024July 05, 2024July 26, 2024NANA
MS-2452July 08, 2024August 21, 2024September 05, 2024August 14, 2024August 07, 2024
MS-246*September 04, 2024October 02, 2024October 23, 2024September 25, 2024September 18, 2024
MS-247October 01, 2024November 14, 2024December 05, 2024November 07, 2024October 31, 2024
MS-248*November 13, 2024December 11, 2024January 01, 2025December 04, 2024November 27, 2024
* MIC-002, MIC-006, MIC-007, and MIC-009 are not available during these studies
1 This study number complies with NJ DEP March Drinking Water PT Study Schedule.
2 This study complies with NJ DEP July drinking water PT study schedule.
Soil/Hazardous Waste PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
Maximum 30 days after study closure
Last Order Date USALast Order Date International Outside USA
SM-140February 06, 2024March 21, 2024April 20, 2024NANA
SM-1411March 26, 2024May 09, 2024June 08, 2024NANA
SM-142August 20, 2024October 03, 2024November 02, 2024September 26, 2024September 19, 2024
SM-143October 21, 2024December 04, 2024January 03, 2024November 27, 2024November 20, 2024
1 This study number complies with NJ DEP April solid/chemical matrix PT study schedule.  NJ DEP complaint analysis should occur between April 1-May 9, 2024.
Underground Storage Tank PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
Maximum 30 days after study closure
Last Order Date USALast Order Date International Outside USA
UST-115February 06, 2024March 21, 2024April 20, 2024NANA
UST-1161March 26, 2024May 09, 2024June 08, 2024NANA
UST-117August 20, 2024October 03, 2024November 02, 2024September 26, 2024September 19, 2024
UST-118October 21, 2024December 04, 2024January 03, 2024November 27, 2024November 20, 2024
1 This study number complies with NJ DEP April solid/chemical matrix PT study schedule.  NJ DEP complaint analysis should occur between April 1-May 9, 2024.
Food Science PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
Maximum 30 days after study closure
Last Order Date USALast Order Date International Outside USA
FS-0224February 13, 2024March 28, 2024April 27, 2024NANA
FS-0524May 07, 2024June 20, 2024July 20, 2024NANA
FS-0824August 06, 2024September 19, 2024October 19, 2024September 12, 2024September 05, 2024
FS-1124November 04, 2024December 18, 2024January 17, 2025December 11, 2024December 04, 2024
Hemp Cannabis Science PT StudiesAdvised Order Deadlines
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
Maximum 30 days after study closure
Last Order Date USALast Order Date International Outside USA
HEMP-0324March 26, 2024May 09, 2024June 08, 2024NANA
HEMP-0924September 24, 2024November 08, 2024December 08, 2024November 01, 2024October 25, 2024
EMERALD Test PT Studies (Order via Emerald Scientific)
Study NumberStudy Open Date
Shipping Samples
Study Close Date
Results due 24:00 EST (GMT-5)
Final Reports Available
CM-0324March 12, 2024April 05, 2024Announced by
Emerald Scientific
CM-0924September 11, 2024September 27, 2024Announced by
Emerald Scientific