QC Standard 4 Back Catalog number: 53087 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2479.16-100-IOX5 Di-n-butyl phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 93952-11-5 Price on request 675083 Tolfenpyrad, 25mg Price on request 54167 Solids (EPA Methods 160.1,.2,.3) Price on request