EPA Method 525 Spike B Back Catalog number: 92313 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L17382500CY 2,4,5,6-Tetrachloro-m-xylene, 10µg/mL in Cyclohexane, 10ml Price on request C335052 Chlorhexidine-d8 Dihydrochloride, 1mg Price on request 34241 n-Butylcyclohexane Price on request