TFA; Trifluoroacetic acid, 99,9%, 250g Back Catalog number: 2121-3-02:250G Availability: In the manufacturer's stock Price on request - + Recommended ME 20300 Aqueous Ethanol Standard (3,0g/l), 10 x 1,2ml Price on request 679748 Erythromycin, 100 µg/ml, Methanol, 5ml Price on request 675250 Pyriproxyfen, 100 µg/ml, Acetonitrile, 5ml Price on request