EPA Method 8330Mix #1 Back Catalog number: 91874 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59138 Conductance @ 20°C [2500 µmho/cm] Price on request 10413.4-K-ME Sodium DL-3-hydroxybutyrate-2,4-13C2 Price on request 38351 WS EDB, DBCP, TCP Price on request