CLP Semi-Volatile Base/Neutral Surrogate Std Back Catalog number: 23016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1976.21-K-IO Triethylene glycol mono(p-nonylphenyl) ether isomer mix, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 71414 3,4,5-Trichlorophenol Price on request 9872.16-50-IO 2,9-Dimethylphenanthrene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17980-09-5 Price on request