525.2 Internal & Surrogate Standard Back Catalog number: 92386 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 33701 Pyruvic aldehyde Price on request CNLM-8150-1.2 Melamine (13C3,99%; Amino-15N3,98%) 100 µg/mL in Water, 1,2ml Price on request 97913 Difenzoquat Price on request