EPA Method 625 Base/Neutrals Mix #4 Back Catalog number: 19317 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677668 Bentazone-6-hydroxy, 10.0 µg/ml, Acetonitrile, 1 Price on request 2126.12-100-IOX10 Arochlor 1242 , 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 53469-21-9 Price on request 8941.10-100MG Coniferaldehyde, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 458-36-6 Price on request