Perchlorate Level 1 Back Catalog number: 59339 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675924 Pentachlorothiophenol, 100mg Price on request 681265 Propargyl alcohol, 250mg Price on request 1133.13-K-IO n-Tridecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 629-50-5 Price on request