MA - VPH Surrogate Spike Back Catalog number: 92368 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L18000014CY Pesticide Mix 14, 10µg/mL in Cyclohexane, 10ml Price on request 680320 6-Ethyl-2-thiouracil, 10mg Price on request 73481 Bupropion Price on request