EPA Method 531.1 - Performance Check Solution

4-Hydroxy-3-methoxymandelic Acid-d3, 10mg

EPA 528 rev. 1.0 Internal Standard Solution 1 100µg/mL in dichloromethane; unit: 1x5mL 3841.8 1,2-Dimethyl-3-nitrobenzene [83-41-0]

Pymetrozine, 100 µg/ml, Acetonitrile, 5ml