Mixed Calibration Standard 1 Back Catalog number: 52053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2514.7-K-ME 4-Hydroxybenzoic acid, 1000µg/mL in MeOH, 1ml Price on request 52069 Spiking Standard 1 Price on request 9281.22-K-ME Tadalafil, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 171596-29-5 Price on request