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2024-2025 Proficiency Study Schedule

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


Non Potable Water - Wastewater - Chemistry PT Studies

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 USA
Last Order Date International
Outside USA
WP-297*Jan 16, 2024Feb. 29, 2024Mar 22, 2024
NA
NA
WP-298Mar 11, 2024Apr 24, 2024May 15, 2024
NANA
WP-299*Apr 16, 2024May 30, 2024Jun 20, 2024
NANA
WP-300Apr 16, 2024Jun 20, 2024
Jul 11, 2024
NANA
WP-301*Jul 16, 2024Aug 29, 2024Sep 19, 2024
Aug 22, 2024
Aug 15, 2024
WP-3021
Aug 6, 2024
Sep 19, 2024
Oct 10, 2024
Sep 15, 2024
Sep 5, 2024
WP-303*Oct 8, 2024Nov 21, 2024Dec 12, 2024
Nov 14, 2024
Nov 7, 2024
WP-304Nov 5, 2024Dec 19, 2024Jan 9, 2025
Dec 12, 2024
Dec 5, 2024
  • *Denotes Full Organic & Inorganic Studies. The 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 (NPW) Microbiological Proficiency Test Studies

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 USA
Last Order Date International
Outside USA
MP-201Jan 8, 2024Feb 21, 2024Mar 13, 2024
NA
NA
MP-2021Mar 5, 2024Apr 18, 2024May 9, 2024
NANA
MP-203Apr 8, 2024May 22, 2024Jun 12, 2024
NANA
MP-204Jul 10, 2024Aug 23, 2024Sep 13, 2024
Aug 16, 2024
Aug 9, 2024
MP-2052Sep 3, 2024Oct 17, 2024Nov 7, 2024
Oct 10, 2024
Oct 3, 2024
MP-206Oct 22, 2024Dec 5, 2024Dec 26, 2024
Dec 28, 2024
Dec 21, 2024
  • 1This 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, 2024
August 30, 2024Sep 27, 2024
  • DMRQA study schedule will be posted on the website when announced by the US EPA.


Potable Water - Drinking Water Chemistry PT Studies

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 USA
Last Order Date International
Outside USA
WS-1371Jan 8, 2024Feb 21, 2024Mar 13, 2024
NA
NA
WS-138Apr 3, 2024May 17, 2024Jun 10, 2024
NANA
WS-1392Jul 2, 2024Aug 15, 2024Sep 5, 2024
Aug 8, 2024
Aug 1, 2024
WS-140Oct 15, 2024Nov 28, 2024Dec 19, 2024
Nov 21, 2024
Nov 14, 2024
  • 1This study number complies with NJ DEP March drinking water PT study schedule.
  • 2This study complies with NJ DEP July drinking water PT study schedule.


Potable Water - Drinking Water - Microbiological PT Studies

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 USA
Last Order Date International Outside
MS-2411Jan 3, 2024Feb 16, 2024Mar 8, 2024
NA
NA
MS-242*Mar 4, 2024Apr 3, 2024Apr 24, 2024
NANA
MS-243Apr 2, 2024May 16, 2024Jun 6, 2024
NANA
MS-244*Jun 5, 2024Jul 5, 2024Jul 26, 2024
NANA
MS-2452Jul 8, 2024Aug 21, 2024Sep 5, 2024
Aug 14, 2024
Aug 7, 2024
MS-246*Sep 4, 2024Oct 2, 2024Oct 23, 2024
Sep 25, 2024
Sep 18, 2024
MS-247Oct 1, 2024Nov 14, 2024Dec 5, 2024
Nov 7, 2024
Oct 31, 2024
MS-248*Nov. 13, 2024Dec. 11, 2024Jan 1, 2025
Dec 4, 2024
Nov 27, 2024

  • * MIC-002, MIC-006, MIC-007, and MIC-009 are not available during these studies
  • 1This study number complies with NJ DEP March Drinking Water PT Study Schedule.
  • 2This study complies with NJ DEP July drinking water PT study schedule.


Underground Storage Tank PT Studies

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 USA
Last Order Date International
Outside USA
UST-115
Feb 6, 2024
Mar 21, 2024
Apr 20, 2024
NA
NA
UST-1161
Mar 26, 2024
May 9, 2024
Jun 8, 2024
NANA
UST-117
Aug 20, 2024
Oct 3, 2024
Nov 2, 2024
Sep 26, 2024
Sep 19, 2024
UST-118
Oct 21, 2024
Dec 4, 2024
Jan 3, 202
Nov 27, 2024
Nov 20, 2024
  • 1This 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.


Soil/Hazardous Waste

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 USA
Last Order Date International
Outside USA
SM-140Feb 6, 2024Mar 21, 2024Apr 20, 2024
NA
NA
SM-1411Mar 26, 2024May 9, 2024Jun 8, 2024
NANA
SM-142Aug 20, 2024Oct 3, 2024Nov 2, 2024
Sep 26, 2024
Sep 19, 2024
SM-143Oct 21, 2024Dec 4, 2024Jan 3, 2024
Nov 27, 2024
,Nov 20, 2024
  • 1This 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 Studies

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 USA
Last Order Date International
Outside USA
FS-0224Feb 13, 2024Mar 28, 2024Apr 27, 2024
NA
NA
FS-0524May 7, 2024Jun 20, 2024Jul 20, 2024
NANA
FS-0824Aug 6, 2024Sep 19, 2024Oct 19, 2024
Sep 12, 2024
Sep 5, 2024
FS-1124Nov 4, 2024Dec 18, 2024Jan 17, 2024
Dec 11, 2024
Dec 4, 2024


Hemp Cannabis Science PT Studies

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 USA
Last Order Date International
Outside USA
HEMP-0324Mar 26, 2024May 9, 2024Jun 8, 2024
NA
NA
HEMP-0924Sep 24, 2024Nov 8, 2024Dec 8, 2024
Nov 1, 2024
Oct 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
Maximum 30 days after study closure
CM-0324
Mar 12, 2024
Apr 5, 2024
Announced by
Emerald Scientific
CM-0924
Sep 11, 2024
Sep 27, 2024
Announced by
Emerald Scientific
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