BTEX (20 µg/mL) Back Catalog number: 98518 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71191 Triethanolamine Price on request 678180 Oxadiargyl, 10 µg/ml, Acetonitrile, 10ml Price on request 675919 Atrazine-2-hydroxy, 100mg Price on request