CLP Semi-Volatile Base/Neutral Surrogate Std Back Catalog number: 22016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92313 EPA Method 525 Spike B Price on request A629140 6-Aminoquinolyl-N-hydroxysuccinimidyl Carbamate 90%, 50mg Price on request 71583 2,3,6-Trichlorophenol-PFB derivative Price on request