Method 1640 Tuning Standard Back Catalog number: 53147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79811 Esfenvalerate, 1000µg/ml in Acetonitrile, 1ml Price on request X9103 Endrin Price on request 688152 6PPD-quinone, 100µg/ml in Acetonitrile, 1ml Price on request