QC Standard 4 Back Catalog number: 53087 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-PAH-LCS Deuterated PAH Solution/Mixture, 1.2ml, toluene Price on request 73927 Clarithromycin, 1000µg/ml in MeOH, 1ml Price on request 680143 13C6-Thiabendazole, 100 µg/ml, Acetonitrile, 1ml Price on request