QC Standard 5 Back Catalog number: 56088 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90822 PAH Standard Price on request 676434 Atrazine-desethyl-desisopropyl, 100µg/ml, Acetonitril, 1ml Price on request 679379 Demeton-S-methyl-sulfone, 10 µg/ml, Cyclohexane, Price on request