Method 616 Standard Back Catalog number: 19200 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676716 Spermidine trihydrochloride, 100mg Price on request 54169 Silica (SiO2) Price on request 2256.2-1ML 1,2-Dibromoethane, in Certan bottle, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 106-93-4 Price on request