EPA Method 531.1 Individual Analytes Back Catalog number: 31241 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54138 0.10M Sodium Hydroxide (NaOH) Price on request 673431 Pyraclostrobin, 100 µg/ml, Acetonitrile, 5ml Price on request 685232 1,4-Dimethylnaphthalene, 100 µg/ml, Cyclohexane, Price on request