EPA Method 507 - Performance Check Solution

Glufosinate-ammonium, 10.0 µg/ml, Water, 10ml

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane

3,3',4,4',5-Pentabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane