Drinking Water Chemistry WS Proficiency Study Schedule
2024 WS Drinking Water Chemistry PT Study Schedule | ||
Study Number | Study Opens | Study Closes |
WS-137 | Jan. 8, 2024 | Feb. 21, 2024 |
WS-138 | April 3, 2024 | May 17, 2024 |
WS-139 | July 2, 2024 | Aug. 15, 2024 |
WS-140 | Oct. 15, 2024 | Nov. 28, 2024 |
Analyte
Benzene | 2-20 ug/L | 1,2-Dichloropropane | 2-20 ug/L |
Carbon tetrachloride | 2-20 ug/L | Ethylbenzene | 2-20 ug/L |
Chlorobenzene | 2-20 ug/L | Styrene | 2-20 ug/L |
1,2-Dichlorobenzene | 2-20 ug/L | Tetrachloroethylene | 2-20 ug/L |
1,4-Dichlorobenzene | 2-20 ug/L | Toluene | 2-20 ug/L |
1,2-Dichloroethane | 2-20 ug/L | 1,1,1-Trichloroethane | 2-20 ug/L |
1,1-Dichloroethylene | 2-20 ug/L | 1,1,2-Trichloroethane | 2-20 ug/L |
cis-1,2-Dichloroethylene | 2-20 ug/L | Trichloroethylene | 2-20 ug/L |
trans-1,2-Dichloroethylene | 2-20 ug/L | 1,2,4-Trichlorobenzene | 2-20 ug/L |
Dichloromethane | 2-20 ug/L | Vinyl Chloride | 2-50 ug/L |
Total Xylenes | 2-50 ug/L |