Soil Proficiency Test Schedule
2024 SM Soil PT Study Schedule | ||
Study Number | Study Opens | Study Closes |
SM-140 | Feb. 6, 2024 | March 21, 2024 |
SM-141 | March 26, 2024 | May 9, 2024 |
SM-142 | Aug. 20, 2024 | Oct. 3, 2024 |
SM-143 | Oct. 21, 2024 | Dec. 4, 2024 |
Analyte
Bromide | 10.0-100 mg/kg |
Chloride | 200-1000 mg/kg |
Fluoride | 25.0-500 mg/kg |
Nitrate as N | 25.0-500 mg/kg |
Nitrite as N | 25.0-500 mg/kg |
Sulfate | 25.0-2000 mg/kg |
Orthophosphate as P | 25.0-500 mg/kg |
Nitrate+Nitrite as N | 50.0-1000 mg/kg |