Multi-Elements Mix Back Catalog number: 50023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 20149 Calibration Mix #1, 200µg/ml in MeOH, 1ml Price on request 9498.13-100-ME Propyphenazone-d3 (2N-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 162935-29-7 Price on request 3798.7-100MG 2-Ethyl-5-methylthiophene, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 40323-88-4 Price on request