EPA 528 rev. 1.0 Sample Fortification Solution 1 100µg/mL in methanol; unit: 1x5mL 2420.6 2-Chlorophenol-3,4,5,6-d4 [93951-73-6]

Ethofumesate, 10.0 µg/ml, Ethyl acetate, 10ml

GC-IRMS Standard 1 1136,16 n-Hexadecane [544-76-3] 1141,21 n-Heneicosane [629-99-2] 1145,25 n-Pentacosane [629-99-2] 1150,30 n-Triacontane [638-68-6] 10,0mg/ml in hexane

Fmoc-Glyphosate, 50mg