13C4-Fipronil, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 681587 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 92258 Semi-Volatile Internal Standard Price on request 679837 Tributyl phosphate, 100 µg/ml, Methanol, 5ml Price on request 5M7-4-100 Boron, 5000 µg/mL in H2O, 100ml Price on request