GFAA Initial Calibration Verification Back Catalog number: 52315 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70294 Trichlorofluoromethane, 1000µg/ml in MeOH, 1ml Price on request 70503 Glyphosate Price on request 681372 Isoprothiolane, 100mg Price on request