Silica (SiO2) Back Catalog number: 54254 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2874.11-50-ME Perfluoroundecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2050-94-8 Price on request 8888.6-10-IO HCH (BHC), Technical, 10µg/mL, Solvent-isooctane, Unit 10mL, # of units-1, Cas.no. 608-73-1 Price on request 8981.19-100-ME 3-Chloro-1,2-propandiol-1-monopalmitate-d5, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request