EPA Method 551.1 Performance Check Soln Back Catalog number: 30104 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 13500-0460-100ME5 (-)-beta-Pinene, 100µg/ml in MeOH, 5ml Price on request 30541 Carbaryl Price on request 12114.4-K-ME Metformin-d6 HCl, 1000µg/ml in MeOH, 1ml Price on request