BTEX Standard Back Catalog number: 90007 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70440 n-Butyl acetate, 1000µg/ml in MeOH, 1ml Price on request C11890500 zeta-Cypermethrin, 100mg Price on request 677784 Metformin hydrochloride, 100 µg/ml, Methanol, 1m Price on request