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Environmental Chemistry Methods (ECM) Index - O

Analyte(s) by Pesticide ECM MRID Matrix Method Date
Orthosulfamuron & Degradates 50318401 Soil and Sediment 3/23/16
Orthosulfamuron & Degradates 50318402 Water 3/23/16
Oxadiazon 41767401 Soil 8/21/89
Oxamyl & Oxime Degradate 47865901 Soil 9/3/09
Oxamyl & Oxime Degradate 45591601 Water 6/17/99
Oxathiapiprolin & Four Degradates 49011152 Soil 11/9/10
Oxathiapiprolin & Two Degradates 49011156 Soil 11/1/10
Oxathiapiprolin & Six Degradates 49011157 Water 2/25/11
Oxathiapiprolin 49011160 Water 2/14/12
Oxydemeton-methyl 41430202 Soil 5/1/89
Oxyfluorfen 50488803 Water 1/8/18
Oxyfluorfen & Isomers 50488801 Soil 1/5/18


EPA makes no claim of validity by posting these methods, but recognizes that the methods may be of some utility to state, tribal, and local authorities. In addition, not all methods listed are independently validated.

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