BTEX (2.0 µg/mL) Back Catalog number: 98515 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79575 Ethyl 4-hydroxybenzoate Price on request D455140 3,5-Diiodo Thyroacetic Acid, 25mg Price on request 673684 Prothiofos, 100 µg/ml, Ethyl acetate, 5ml Price on request