Calibration Mix #1, 200µg/ml in MeOH, 1ml Back Catalog number: 20149 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680424 13C3-Caffeine, 10mg Price on request 679825 Tylosin, 100 µg/ml, Methanol, 1ml Price on request 675727 TEPP, 10.0 µg/ml, Ethyl acetate, 10ml Price on request